Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"The biggest changes are MPAM enablement in drivers/resctrl and new PMU
support under drivers/perf.
On the core side, FEAT_LSUI lets futex atomic operations with EL0
permissions, avoiding PAN toggling.
The rest is mostly TLB invalidation refactoring, further generic entry
work, sysreg updates and a few fixes.
Core features:
- Add support for FEAT_LSUI, allowing futex atomic operations without
toggling Privileged Access Never (PAN)
- Further refactor the arm64 exception handling code towards the
generic entry infrastructure
- Optimise __READ_ONCE() with CONFIG_LTO=y and allow alias analysis
through it
Memory management:
- Refactor the arm64 TLB invalidation API and implementation for
better control over barrier placement and level-hinted invalidation
- Enable batched TLB flushes during memory hot-unplug
- Fix rodata=full block mapping support for realm guests (when
BBML2_NOABORT is available)
Perf and PMU:
- Add support for a whole bunch of system PMUs featured in NVIDIA's
Tegra410 SoC (cspmu extensions for the fabric and PCIe, new drivers
for CPU/C2C memory latency PMUs)
- Clean up iomem resource handling in the Arm CMN driver
- Fix signedness handling of AA64DFR0.{PMUVer,PerfMon}
MPAM (Memory Partitioning And Monitoring):
- Add architecture context-switch and hiding of the feature from KVM
- Add interface to allow MPAM to be exposed to user-space using
resctrl
- Add errata workaround for some existing platforms
- Add documentation for using MPAM and what shape of platforms can
use resctrl
Miscellaneous:
- Check DAIF (and PMR, where relevant) at task-switch time
- Skip TFSR_EL1 checks and barriers in synchronous MTE tag check mode
(only relevant to asynchronous or asymmetric tag check modes)
- Remove a duplicate allocation in the kexec code
- Remove redundant save/restore of SCS SP on entry to/from EL0
- Generate the KERNEL_HWCAP_ definitions from the arm64 hwcap
descriptions
- Add kselftest coverage for cmpbr_sigill()
- Update sysreg definitions"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (109 commits)
arm64: rsi: use linear-map alias for realm config buffer
arm64: Kconfig: fix duplicate word in CMDLINE help text
arm64: mte: Skip TFSR_EL1 checks and barriers in synchronous tag check mode
arm64/sysreg: Update ID_AA64SMFR0_EL1 description to DDI0601 2025-12
arm64/sysreg: Update ID_AA64ZFR0_EL1 description to DDI0601 2025-12
arm64/sysreg: Update ID_AA64FPFR0_EL1 description to DDI0601 2025-12
arm64/sysreg: Update ID_AA64ISAR2_EL1 description to DDI0601 2025-12
arm64/sysreg: Update ID_AA64ISAR0_EL1 description to DDI0601 2025-12
arm64/hwcap: Generate the KERNEL_HWCAP_ definitions for the hwcaps
arm64: kexec: Remove duplicate allocation for trans_pgd
ACPI: AGDI: fix missing newline in error message
arm64: Check DAIF (and PMR) at task-switch time
arm64: entry: Use split preemption logic
arm64: entry: Use irqentry_{enter_from,exit_to}_kernel_mode()
arm64: entry: Consistently prefix arm64-specific wrappers
arm64: entry: Don't preempt with SError or Debug masked
entry: Split preemption from irqentry_exit_to_kernel_mode()
entry: Split kernel mode logic from irqentry_{enter,exit}()
entry: Move irqentry_enter() prototype later
entry: Remove local_irq_{enable,disable}_exit_to_user()
...
Merge tag 'ras_core_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Borislav Petkov:
- Add new AMD MCA bank names and types to the MCA code, preceded by a
clean up of the relevant places to have them more developer-friendly
(read: sort them alphanumerically and clean up comments) such that
adding new banks is easy
* tag 'ras_core_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce, EDAC/mce_amd: Add new SMCA bank types
x86/mce, EDAC/mce_amd: Update CS bank type naming
x86/mce, EDAC/mce_amd: Reorder SMCA bank type enums
Merge tag 'edac_updates_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- amd64_edac: Add support for AMD Zen 3 (family 19h, models 40h–4fh)
- i10nm: Add GNR error information decoder support as an alternative to
the firmware decoder
- versalnet: Restructure the init/teardown logic for correct and more
readable error handling. Also, fix two memory leaks and a resource
leak
- Convert several internal structs to use bounded flex arrays, enabling
the kernel's runtime checker to catch out-of-bounds memory accesses
- Mark various sysfs attribute tables read-only, preventing accidental
modification at runtime
- The usual fixes and cleanups across the subsystem
* tag 'edac_updates_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/mc: Use kzalloc_flex()
EDAC/ie31200: Make rpl_s_cfg static
EDAC/i10nm: Fix spelling mistake "readd" -> "read"
EDAC/versalnet: Fix device_node leak in mc_probe()
EDAC/versalnet: Fix memory leak in remove and probe error paths
EDAC/amd64: Add support for family 19h, models 40h-4fh
EDAC/i10nm: Add driver decoder for Granite Rapids server
EDAC/sb: Use kzalloc_flex()
EDAC/i7core: Use kzalloc_flex()
EDAC/mpc85xx: Constify device sysfs attributes
EDAC/device: Allow addition of const sysfs attributes
EDAC/pci_sysfs: Constify instance sysfs attributes
EDAC/device: Constify info sysfs attributes
EDAC/device: Drop unnecessary and dangerous casts of attributes
EDAC/device: Drop unused macro to_edacdev_attr()
EDAC/altera: Drop unused field eccmgr_sysfs_attr
EDAC/versalnet: Refactor memory controller initialization and cleanup
Merge tag 'x86_sev_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SEV updates from Borislav Petkov:
- Change the SEV host code handling of when SNP gets enabled in order
to allow the machine to claim SNP-related resources only when SNP
guests are really going to be launched. The user requests this by
loading the ccp module and thus it controls when SNP initialization
is done
So export an API which module code can call and do the necessary SNP
setup only when really needed
- Drop an unnecessary write-back and invalidate operation that was
being performed too early, since the ccp driver already issues its
own at the correct point in the initialization sequence
- Drop the hotplug callbacks for enabling SNP on newly onlined CPUs,
which were both architecturally unsound (the firmware rejects
initialization if any CPU lacks the required configuration) and buggy
(the MFDM SYSCFG MSR bit was not being set)
- Code refactoring and cleanups to accomplish the above
* tag 'x86_sev_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
crypto/ccp: Update HV_FIXED page states to allow freeing of memory
crypto/ccp: Implement SNP x86 shutdown
x86/sev, crypto/ccp: Move HSAVE_PA setup to arch/x86/
x86/sev, crypto/ccp: Move SNP init to ccp driver
x86/sev: Create snp_shutdown()
x86/sev: Create snp_prepare()
x86/sev: Create a function to clear/zero the RMP
x86/sev: Rename SNP_FEATURES_PRESENT to SNP_FEATURES_IMPL
x86/virt/sev: Keep the RMP table bookkeeping area mapped
x86/virt/sev: Drop WBINVD before setting MSR_AMD64_SYSCFG_SNP_EN
x86/virt/sev: Drop support for SNP hotplug
Merge tag 'x86_misc_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 updates from Borislav Petkov:
- Reference the tip tree maintainer handbook directly from the relevant
MAINTAINERS file entries (covering timers, IRQ, locking, scheduling,
perf, x86, and others) so that contributors and tooling can know
where to look
- Enable interrupt remapping in defconfig, which is an architectural
requirement for x2APIC to function correctly on bare metal. Without
it, x2APIC was effectively enabled but non-functional.
- Ensure that drivers which register custom restart handlers (such as
those needed for SoC-based x86 devices like Intel Lightning Mountain)
are actually invoked during reboot, bringing x86 in line with how
other architectures handle this.
- Cleanups
* tag 'x86_misc_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add references to tip tree handbook
x86/64/defconfig: Add CONFIG_IRQ_REMAP
x86/reboot: Execute the kernel restart handler upon machine restart
x86/mtrr: Use kstrtoul() in parse_mtrr_spare_reg()
Merge tag 'x86_microcode_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loading updates from Borislav Petkov:
"The kernel carries a table of Intel CPUs family, model, stepping, etc
tuples which say what is the latest microcode for that particular CPU.
Some CPU variants differ only by the platform ID which determines what
microcode needs to be loaded on them.
Carve out the platform ID handling from the microcode loader and make it
available in a more generic place so that the old microcode
verification machinery can use it"
* tag 'x86_microcode_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Add platform mask to Intel microcode "old" list
x86/cpu: Add platform ID to CPU matching structure
x86/cpu: Add platform ID to CPU info structure
x86/microcode: Refactor platform ID enumeration into a helper
Merge tag 'x86_fred_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FRED updates from Borislav Petkov:
"We made the FRED support an opt-in initially out of fear of it
breaking machines left and right in the case of a hw bug in the first
generation of machines supporting it.
Now that that the FRED code has seen a lot of hammering, flip the
logic to be opt-out as is the usual case with new hw features"
* tag 'x86_fred_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fred: Remove kernel log message when initializing exceptions
x86/fred: Enable FRED by default
Merge tag 'x86_cache_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
- Add return value descriptions to several internal functions,
addressing kernel-doc complaints
- Add the x86 maintainer mailing list to the resctrl section so they
are automatically included in patch submissions, and reference the
applicable contribution rules document
- Allow users to apply a single Capacity Bitmask to all cache domains
at once using '*' as a shorthand, instead of having to specify each
domain individually. This is particularly user-friendly on high
core-count systems with many cache clusters
- When a user provides a non-existent domain ID while configuring cache
allocation, ensure the failure reason is properly reported to the
user rather than silently returning an error with a misleading "ok"
status
* tag 'x86_cache_for_v7.1_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
fs/resctrl: Add missing return value descriptions
MAINTAINERS: Update resctrl entry
fs/resctrl: Add "*" shorthand to set io_alloc CBM for all domains
fs/resctrl: Report invalid domain ID when parsing io_alloc_cbm
Merge tag 'x86_tdx_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 TDX updates from Dave Hansen:
"The only real thing of note here is printing the TDX module version.
This is a little silly on its own, but the upcoming TDX module update
code needs the same TDX module call. This shrinks that set a wee bit.
There's also few minor macro cleanups and a tweak to the GetQuote ABI
to make it easier for userspace to detect zero-length (failed) quotes"
* tag 'x86_tdx_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
virt: tdx-guest: Return error for GetQuote failures
KVM/TDX: Rename KVM_SUPPORTED_TD_ATTRS to KVM_SUPPORTED_TDX_TD_ATTRS
x86/tdx: Rename TDX_ATTR_* to TDX_TD_ATTR_*
KVM/TDX: Remove redundant definitions of TDX_TD_ATTR_*
x86/tdx: Fix the typo in TDX_ATTR_MIGRTABLE
x86/virt/tdx: Print TDX module version during init
x86/virt/tdx: Retrieve TDX module version
Merge tag 'x86_mm_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Dave Hansen:
- Convert x86 code to use generic "pagetable" APIs and ptdescs
This aligns some the set_memory*() code better with the new page
table APIs, especially using ptdescs as opposed to 'struct page'
directly.
* tag 'x86_mm_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/pat: Convert split_large_page() to use ptdescs
x86/mm/pat: Convert populate_pgd() to use page table apis
x86/mm/pat: Convert pmd code to use page table apis
x86/mm/pat: Convert pte code to use page table apis
Merge tag 'x86_cpu_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Dave Hansen:
- Complete LASS enabling: deal with vsyscall and EFI
The existing Linear Address Space Separation (LASS) support punted
on support for common EFI and vsyscall configs. Complete the
implementation by supporting EFI and vsyscall=xonly.
- Clean up CPUID usage in newer Intel "avs" audio driver and update the
x86-cpuid-db file
* tag 'x86_cpu_for_7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v3.0
ASoC: Intel: avs: Include CPUID header at file scope
ASoC: Intel: avs: Check maximum valid CPUID leaf
x86/cpu: Remove LASS restriction on vsyscall emulation
x86/vsyscall: Disable LASS if vsyscall mode is set to EMULATE
x86/vsyscall: Restore vsyscall=xonly mode under LASS
x86/traps: Consolidate user fixups in the #GP handler
x86/vsyscall: Reorganize the page fault emulation code
x86/cpu: Remove LASS restriction on EFI
x86/efi: Disable LASS while executing runtime services
x86/cpu: Defer LASS enabling until userspace comes up
Merge tag 'x86-vdso-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 vdso updates from Ingo Molnar:
"vdso cleanups by Thomas Weißschuh:
- Clean up remnants of VDSO32_NOTE_MASK
- Drop pointless #ifdeffery in vvar_vclock_fault()"
* tag 'x86-vdso-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Drop pointless #ifdeffery in vvar_vclock_fault()
x86/vdso: Clean up remnants of VDSO32_NOTE_MASK
Merge tag 'x86-platform-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
- Remove M486/M486SX/ELAN support, first minimal step (Ingo Molnar)
- Print AGESA string from DMI additional information entry (Yazen
Ghannam, Mario Limonciello)
- Improve and fix the DMI code (Mario Limonciello):
- Correct an indexing error in <linux/dmi.h>
- Adjust dmi_decode() to use enums <linux/dmi.h>
- Add pr_fmt() for dmi_scan.c to fix & standardize the log prefixes
* tag 'x86-platform-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/CPU/AMD: Print AGESA string from DMI additional information entry
firmware: dmi: Add pr_fmt() for dmi_scan.c
firmware: dmi: Adjust dmi_decode() to use enums
firmware: dmi: Correct an indexing error in dmi.h
x86/cpu: Remove M486/M486SX/ELAN support
* tag 'x86-cleanups-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Correct the comment explaining what xfeatures_in_use() does
x86/split_lock: Don't warn about unknown split_lock_detect parameter
x86/fpu: Correct misspelled xfeaures_to_write local var
x86/apic: Drop AMD Extended Interrupt LVT macros
x86/cpu/topology: Consolidate AMD and Hygon cases in parse_topology()
block/floppy: Don't use REALLY_SLOW_IO for delays
x86/paravirt: Replace io_delay() hook with a bool
x86/irqflags: Preemptively move include paravirt.h directive where it belongs
x86/split_lock: Restructure the unwieldy switch-case in sld_state_show()
x86/local: Remove trailing semicolon from _ASM_XADD in local_add_return()
x86/asm: Use inout "+" asm onstraint modifiers in __iowrite32_copy()
Merge tag 'x86-asm-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm from Ingo Molnar:
"x86 asm cleanups by Uros Bizjak:
- Remove unnecessary memory clobbers from FS/GS base (read-)
accessors and savesegment()
- Use ASM_INPUT_RM in __loadsegment_fs() to work around clang code
generation problems
- Implement loadsegment()/savesegment() macros with static inline
helpers
- Use savesegment() for segment register reads in ELF core dump and
__show_regs()
- Use correct type for 'gs' variable in __show_regs() to avoid
zero-extension
- Clean up 'sel' variable usage in do_set_thread_area()"
* tag 'x86-asm-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tls: Clean up 'sel' variable usage in do_set_thread_area()
x86/process/32: Use correct type for 'gs' variable in __show_regs() to avoid zero-extension
x86/process/64: Use savesegment() in __show_regs() instead of inline asm
x86/elf: Use savesegment() for segment register reads in ELF core dump
x86/asm/segment: Implement loadsegment()/savesegment() macros with static inline helpers
x86/asm/segment: Use ASM_INPUT_RM in __loadsegment_fs()
x86/asm/segment: Remove unnecessary "memory" clobber from savesegment()
x86/asm/fsgsbase: Remove unnecessary "memory" clobbers from FS/GS base (read-) accessors
Merge tag 'sched-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Fair scheduling updates:
- Skip SCHED_IDLE rq for SCHED_IDLE tasks (Christian Loehle)
- Remove superfluous rcu_read_lock() in the wakeup path (K Prateek Nayak)
- Simplify the entry condition for update_idle_cpu_scan() (K Prateek Nayak)
- Simplify SIS_UTIL handling in select_idle_cpu() (K Prateek Nayak)
- Avoid overflow in enqueue_entity() (K Prateek Nayak)
- Update overutilized detection (Vincent Guittot)
- Prevent negative lag increase during delayed dequeue (Vincent Guittot)
- Clear buddies for preempt_short (Vincent Guittot)
- Implement more complex proportional newidle balance (Peter Zijlstra)
- Increase weight bits for avg_vruntime (Peter Zijlstra)
- Use full weight to __calc_delta() (Peter Zijlstra)
RT and DL scheduling updates:
- Fix incorrect schedstats for rt and dl thread (Dengjun Su)
- Skip group schedulable check with rt_group_sched=0 (Michal Koutný)
- Move group schedulability check to sched_rt_global_validate()
(Michal Koutný)
- Add reporting of runtime left & abs deadline to sched_getattr()
for DEADLINE tasks (Tommaso Cucinotta)
Scheduling topology updates by K Prateek Nayak:
- Compute sd_weight considering cpuset partitions
- Extract "imb_numa_nr" calculation into a separate helper
- Allocate per-CPU sched_domain_shared in s_data
- Switch to assigning "sd->shared" from s_data
- Remove sched_domain_shared allocation with sd_data
Energy-aware scheduling updates:
- Filter false overloaded_group case for EAS (Vincent Guittot)
- PM: EM: Switch to rcu_dereference_all() in wakeup path
(Dietmar Eggemann)
Infrastructure updates:
- Replace use of system_unbound_wq with system_dfl_wq (Marco Crivellari)
Proxy scheduling updates by John Stultz:
- Make class_schedulers avoid pushing current, and get rid of proxy_tag_curr()
- Minimise repeated sched_proxy_exec() checking
- Fix potentially missing balancing with Proxy Exec
- Fix and improve task::blocked_on et al handling
- Add assert_balance_callbacks_empty() helper
- Add logic to zap balancing callbacks if we pick again
- Move attach_one_task() and attach_task() helpers to sched.h
- Handle blocked-waiter migration (and return migration)
- Add K Prateek Nayak to scheduler reviewers for proxy execution
Misc cleanups and fixes by John Stultz, Joseph Salisbury, Peter
Zijlstra, K Prateek Nayak, Michal Koutný, Randy Dunlap, Shrikanth
Hegde, Vincent Guittot, Zhan Xusheng, Xie Yuanbin and Vincent Guittot"
* tag 'sched-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
sched/eevdf: Clear buddies for preempt_short
sched/rt: Cleanup global RT bandwidth functions
sched/rt: Move group schedulability check to sched_rt_global_validate()
sched/rt: Skip group schedulable check with rt_group_sched=0
sched/fair: Avoid overflow in enqueue_entity()
sched: Use u64 for bandwidth ratio calculations
sched/fair: Prevent negative lag increase during delayed dequeue
sched/fair: Use sched_energy_enabled()
sched: Handle blocked-waiter migration (and return migration)
sched: Move attach_one_task and attach_task helpers to sched.h
sched: Add logic to zap balance callbacks if we pick again
sched: Add assert_balance_callbacks_empty helper
sched/locking: Add special p->blocked_on==PROXY_WAKING value for proxy return-migration
sched: Fix modifying donor->blocked on without proper locking
locking: Add task::blocked_lock to serialize blocked_on state
sched: Fix potentially missing balancing with Proxy Exec
sched: Minimise repeated sched_proxy_exec() checking
sched: Make class_schedulers avoid pushing current, and get rid of proxy_tag_curr()
MAINTAINERS: Add K Prateek Nayak to scheduler reviewers
sched/core: Get this cpu once in ttwu_queue_cond()
...
Merge tag 'perf-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"Core updates:
- Try to allocate task_ctx_data quickly, to optimize O(N^2) algorithm
on large systems with O(100k) threads (Namhyung Kim)
AMD PMU driver IBS support updates and fixes, by Ravi Bangoria:
- Fix interrupt accounting for discarded samples
- Fix a Zen5-specific quirk
- Fix PhyAddrVal handling
- Fix NMI-safety with perf_allow_kernel()
- Fix a race between event add and NMIs
Intel PMU driver updates:
- Only check GP counters for PEBS constraints validation (Dapeng Mi)
MSR driver:
- Turn SMI_COUNT and PPERF on by default, instead of a long list of
CPU models to enable them on (Kan Liang)
... and misc cleanups and fixes by Aldf Conte, Anshuman Khandual,
Namhyung Kim, Ravi Bangoria and Yen-Hsiang Hsu"
* tag 'perf-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/events: Replace READ_ONCE() with standard pgtable accessors
perf/x86/msr: Make SMI and PPERF on by default
perf/x86/intel/p4: Fix unused variable warning in p4_pmu_init()
perf/x86/intel: Only check GP counters for PEBS constraints validation
perf/x86/amd/ibs: Fix comment typo in ibs_op_data
perf/amd/ibs: Advertise remote socket capability
perf/amd/ibs: Enable streaming store filter
perf/amd/ibs: Enable RIP bit63 hardware filtering
perf/amd/ibs: Enable fetch latency filtering
perf/amd/ibs: Support IBS_{FETCH|OP}_CTL2[Dis] to eliminate RMW race
perf/amd/ibs: Add new MSRs and CPUID bits definitions
perf/amd/ibs: Define macro for ldlat mask and shift
perf/amd/ibs: Avoid race between event add and NMI
perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler
perf/amd/ibs: Preserve PhyAddrVal bit when clearing PhyAddr MSR
perf/amd/ibs: Limit ldlat->l3missonly dependency to Zen5
perf/amd/ibs: Account interrupt for discarded samples
perf/core: Simplify __detach_global_ctx_data()
perf/core: Try to allocate task_ctx_data quickly
perf/core: Pass GFP flags to attach_task_ctx_data()
Merge tag 'objtool-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- KLP support updates and fixes (Song Liu)
- KLP-build script updates and fixes (Joe Lawrence)
- Support Clang RAX DRAP sequence, to address clang false positive
(Josh Poimboeuf)
- Reorder ORC register numbering to match regular x86 register
numbering (Josh Poimboeuf)
- Misc cleanups (Wentong Tian, Song Liu)
* tag 'objtool-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool/x86: Reorder ORC register numbering
objtool: Support Clang RAX DRAP sequence
livepatch/klp-build: report patch validation fuzz
livepatch/klp-build: add terminal color output
livepatch/klp-build: provide friendlier error messages
livepatch/klp-build: improve short-circuit validation
livepatch/klp-build: fix shellcheck complaints
livepatch/klp-build: add Makefile with check target
livepatch/klp-build: add grep-override function
livepatch/klp-build: switch to GNU patch and recountdiff
livepatch/klp-build: support patches that add/remove files
objtool/klp: Correlate locals to globals
objtool/klp: Match symbols based on demangled_name for global variables
objtool/klp: Remove .llvm suffix in demangle_name()
objtool/klp: Also demangle global objects
objtool/klp: Use sym->demangled_name for symbol_name hash
objtool/klp: Remove trailing '_' in demangle_name()
objtool/klp: Remove redundant strcmp() in correlate_symbols()
objtool: Use section/symbol type helpers
Miscellaneous fixes and cleanups by Peter Zijlstra, Randy Dunlap,
Thomas Weißschuh, Davidlohr Bueso and Mikhail Gavrilov"
* tag 'locking-core-2026-04-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
compiler: Simplify generic RELOC_HIDE()
locking: Add lock context annotations in the spinlock implementation
locking: Add lock context support in do_raw_{read,write}_trylock()
locking: Fix rwlock support in <linux/spinlock_up.h>
lockdep: Raise default stack trace limits when KASAN is enabled
cleanup: Optimize guards
jump_label: remove workaround for old compilers in initializations
jump_label: use ATOMIC_INIT() for initialization of .enabled
futex: Convert to compiler context analysis
locking/rwsem: Fix logic error in rwsem_del_waiter()
locking/rwsem: Add context analysis
locking/rtmutex: Add context analysis
locking/mutex: Add context analysis
compiler-context-analysys: Add __cond_releases()
locking/mutex: Remove the list_head from struct mutex
locking/semaphore: Remove the list_head from struct semaphore
locking/rwsem: Remove the list_head from struct rw_semaphore
rust: atomic: Update a safety comment in impl of `fetch_add()`
rust: sync: atomic: Update documentation for `fetch_add()`
rust: sync: atomic: Add fetch_sub()
...
Merge tag 'smp-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP core updates from Thomas Gleixner:
- Switch smp_call_on_cpu() to user system_percpu_wq instead of
system_wq a part of the ongoing workqueue restructuring
- Improve the CSD-lock diagnostics for smp_call_function_single() to
provide better debug mechanisms on weakly ordered systems.
- Cache the current CPU number once in smp_call_function*() instead of
retrieving it over and over.
- Add missing kernel-doc comments all over the place
* tag 'smp-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp: Use system_percpu_wq instead of system_wq
smp: Improve smp_call_function_single() CSD-lock diagnostics
smp: Get this_cpu once in smp_call_function
smp: Add missing kernel-doc comments
Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull vdso updates from Thomas Gleixner:
- Make the handling of compat functions consistent and more robust
- Rework the underlying data store so that it is dynamically allocated,
which allows the conversion of the last holdout SPARC64 to the
generic VDSO implementation
- Rework the SPARC64 VDSO to utilize the generic implementation
- Mop up the left overs of the non-generic VDSO support in the core
code
- Expand the VDSO selftest and make them more robust
- Allow time namespaces to be enabled independently of the generic VDSO
support, which was not possible before due to SPARC64 not using it
- Various cleanups and improvements in the related code
* tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
timens: Use task_lock guard in timens_get*()
timens: Use mutex guard in proc_timens_set_offset()
timens: Simplify some calls to put_time_ns()
timens: Add a __free() wrapper for put_time_ns()
timens: Remove dependency on the vDSO
vdso/timens: Move functions to new file
selftests: vDSO: vdso_test_correctness: Add a test for time()
selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c
selftests: vDSO: vdso_test_correctness: Handle different tv_usec types
selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks
selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks
Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers"
random: vDSO: Remove ifdeffery
random: vDSO: Trim vDSO includes
vdso/datapage: Trim down unnecessary includes
vdso/datapage: Remove inclusion of gettimeofday.h
vdso/helpers: Explicitly include vdso/processor.h
vdso/gettimeofday: Add explicit includes
random: vDSO: Add explicit includes
MIPS: vdso: Explicitly include asm/vdso/vdso.h
...
Merge tag 'timers-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner:
- A rework of the hrtimer subsystem to reduce the overhead for
frequently armed timers, especially the hrtick scheduler timer:
- Better timer locality decision
- Simplification of the evaluation of the first expiry time by
keeping track of the neighbor timers in the RB-tree by providing
a RB-tree variant with neighbor links. That avoids walking the
RB-tree on removal to find the next expiry time, but even more
important allows to quickly evaluate whether a timer which is
rearmed changes the position in the RB-tree with the modified
expiry time or not. If not, the dequeue/enqueue sequence which
both can end up in rebalancing can be completely avoided.
- Deferred reprogramming of the underlying clock event device. This
optimizes for the situation where a hrtimer callback sets the
need resched bit. In that case the code attempts to defer the
re-programming of the clock event device up to the point where
the scheduler has picked the next task and has the next hrtick
timer armed. In case that there is no immediate reschedule or
soft interrupts have to be handled before reaching the reschedule
point in the interrupt entry code the clock event is reprogrammed
in one of those code paths to prevent that the timer becomes
stale.
- Support for clocksource coupled clockevents
The TSC deadline timer is coupled to the TSC. The next event is
programmed in TSC time. Currently this is done by converting the
CLOCK_MONOTONIC based expiry value into a relative timeout,
converting it into TSC ticks, reading the TSC adding the delta
ticks and writing the deadline MSR.
As the timekeeping core has the conversion factors for the TSC
already, the whole back and forth conversion can be completely
avoided. The timekeeping core calculates the reverse conversion
factors from nanoseconds to TSC ticks and utilizes the base
timestamps of TSC and CLOCK_MONOTONIC which are updated once per
tick. This allows a direct conversion into the TSC deadline value
without reading the time and as a bonus keeps the deadline
conversion in sync with the TSC conversion factors, which are
updated by adjtimex() on systems with NTP/PTP enabled.
- Allow inlining of the clocksource read and clockevent write
functions when they are tiny enough, e.g. on x86 RDTSC and WRMSR.
With all those enhancements in place a hrtick enabled scheduler
provides the same performance as without hrtick. But also other
hrtimer users obviously benefit from these optimizations.
- Robustness improvements and cleanups of historical sins in the
hrtimer and timekeeping code.
- Rewrite of the clocksource watchdog.
The clocksource watchdog code has over time reached the state of an
impenetrable maze of duct tape and staples. The original design,
which was made in the context of systems far smaller than today, is
based on the assumption that the to be monitored clocksource (TSC)
can be trivially compared against a known to be stable clocksource
(HPET/ACPI-PM timer).
Over the years this rather naive approach turned out to have major
flaws. Long delays between the watchdog invocations can cause wrap
arounds of the reference clocksource. The access to the reference
clocksource degrades on large multi-sockets systems dure to
interconnect congestion. This has been addressed with various
heuristics which degraded the accuracy of the watchdog to the point
that it fails to detect actual TSC problems on older hardware which
exposes slow inter CPU drifts due to firmware manipulating the TSC to
hide SMI time.
The rewrite addresses this by:
- Restricting the validation against the reference clocksource to
the boot CPU which is usually closest to the legacy block which
contains the reference clocksource (HPET/ACPI-PM).
- Do a round robin validation betwen the boot CPU and the other
CPUs based only on the TSC with an algorithm similar to the TSC
synchronization code during CPU hotplug.
- Being more leniant versus remote timeouts
- The usual tiny fixes, cleanups and enhancements all over the place
* tag 'timers-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
alarmtimer: Access timerqueue node under lock in suspend
hrtimer: Fix incorrect #endif comment for BITS_PER_LONG check
posix-timers: Fix stale function name in comment
timers: Get this_cpu once while clearing the idle state
clocksource: Rewrite watchdog code completely
clocksource: Don't use non-continuous clocksources as watchdog
x86/tsc: Handle CLOCK_SOURCE_VALID_FOR_HRES correctly
MIPS: Don't select CLOCKSOURCE_WATCHDOG
parisc: Remove unused clocksource flags
hrtimer: Add a helper to retrieve a hrtimer from its timerqueue node
hrtimer: Remove trailing comma after HRTIMER_MAX_CLOCK_BASES
hrtimer: Mark index and clockid of clock base as const
hrtimer: Drop unnecessary pointer indirection in hrtimer_expire_entry event
hrtimer: Drop spurious space in 'enum hrtimer_base_type'
hrtimer: Don't zero-initialize ret in hrtimer_nanosleep()
hrtimer: Remove hrtimer_get_expires_ns()
timekeeping: Mark offsets array as const
timekeeping/auxclock: Consistently use raw timekeeper for tk_setup_internals()
timer_list: Print offset as signed integer
tracing: Use explicit array size instead of sentinel elements in symbol printing
...
Merge tag 'irq-msi-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull MSI interrupt update from Thomas Gleixner:
"A small update for the MSI interrupt library to check for callers
which fail to provide the mandatory irq_write_msi_msg() callback,
which prevents a NULL pointer dereference later"
* tag 'irq-msi-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/msi-lib: Refuse initialization when irq_write_msi_msg() is missing
Merge tag 'irq-drivers-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt chip driver updates from Thomas Gleixner:
- A large refactoring for the Renesas RZV2H driver to add new interrupt
types cleanly
- A large refactoring for the Renesas RZG2L driver to add support the
new RZ/G3L variant
- Add support for the new NXP S32N79 chip in the IMX irq-steer driver
- Add support for the Apple AICv3 variant
- Enhance the Loongson PCH LPC driver so it can be used on MIPS with
device tree firmware
- Allow the PIC32 EVIC driver to be built independent of MIPS in
compile tests
- The usual small fixes and enhancements all over the place
* tag 'irq-drivers-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits)
irqchip/irq-pic32-evic: Add __maybe_unused for board_bind_eic_interrupt in COMPILE_TEST
irqchip/renesas-rzv2h: Kill icu_err string
irqchip/renesas-rzv2h: Kill swint_names[]
irqchip/renesas-rzv2h: Kill swint_idx[]
irqchip/renesas-rzg2l: Add NMI support
irqchip/renesas-rzg2l: Clear the shared interrupt bit in rzg2l_irqc_free()
irqchip/renesas-rzg2l: Replace raw_spin_{lock,unlock} with guard() in rzg2l_irq_set_type()
irqchip/gic-v3: Print a warning for out-of-range interrupt numbers
irqchip/renesas-rzg2l: Add shared interrupt support
irqchip/renesas-rzg2l: Add RZ/G3L support
irqchip/renesas-rzg2l: Drop IRQC_IRQ_COUNT macro
irqchip/renesas-rzg2l: Drop IRQC_TINT_START macro
irqchip/renesas-rzg2l: Drop IRQC_NUM_IRQ macro
irqchip/renesas-rzg2l: Dynamically allocate fwspec array
irqchip/renesas-rzg2l: Split rzfive_irqc_{mask,unmask} into separate IRQ and TINT handlers
irqchip/renesas-rzg2l: Split rzfive_tint_irq_endisable() into separate IRQ and TINT helpers
irqchip/renesas-rzg2l: Replace rzg2l_irqc_irq_{enable,disable} with TINT-specific handlers
irqchip/renesas-rzg2l: Split set_type handler into separate IRQ and TINT functions
irqchip/renesas-rzg2l: Split EOI handler into separate IRQ and TINT functions
irqchip/renesas-rzg2l: Replace single irq_chip with per-region irq_chip instances
...
Merge tag 'irq-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core irq updates from Thomas Gleixner:
- Invoke add_interrupt_randomness() in handle_percpu_devid_irq() and
cleanup the workaround in the Hyper-V driver, which would now invoke
it twice on ARM64. Removing it from the driver requires to add it to
the x86 system vector entry point
- Remove the pointles cpu_read_lock() around reading CPU possible mask,
which is read only after init
- Add documentation for the interaction between device tree bindings
and the interrupt type defines in irq.h
- Delete stale defines in the matrix allocator and the equivalent in
loongarch
* tag 'irq-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Drivers: hv: Move add_interrupt_randomness() to hypervisor callback sysvec
genirq/chip: Invoke add_interrupt_randomness() in handle_percpu_devid_irq()
genirq/affinity: Remove cpus_read_lock() while reading cpu_possible_mask
genirq/matrix, LoongArch: Delete IRQ_MATRIX_BITS leftovers
genirq: Document interaction between <linux/irq.h> and DT binding defines
Merge tag 'core-entry-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull entry code update from Thomas Gleixner:
"A trivial update for the entry code adding missing kernel
documentation for function arguments"
* tag 'core-entry-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
entry: Add missing kernel-doc for arch_ptrace_report_syscall functions
Merge tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild/Kconfig updates from Nicolas Schier:
"Kbuild:
- reject unexpected values for LLVM=
- uapi: remove usage of toolchain headers
- switch from '-fms-extensions' to '-fms-anonymous-structs' when
available (currently: clang >= 23.0.0)
- reduce the number of compiler-generated suffixes for clang thin-lto
build
- reduce output spam ("GEN Makefile") when building out of tree
- improve portability for testing headers
- also test UAPI headers against C++ compilers
- drop build ID architecture allow-list in vdso_install
- only run checksyscalls when necessary
- update the debug information notes in reproducible-builds.rst
- expand inlining hints with -fdiagnostics-show-inlining-chain
Kconfig:
- forbid multiple entries with the same symbol in a choice
- error out on duplicated kconfig inclusion"
* tag 'kbuild-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux: (35 commits)
kbuild: expand inlining hints with -fdiagnostics-show-inlining-chain
kconfig: forbid multiple entries with the same symbol in a choice
Documentation: kbuild: Update the debug information notes in reproducible-builds.rst
checksyscalls: move instance functionality into generic code
checksyscalls: only run when necessary
checksyscalls: fail on all intermediate errors
checksyscalls: move path to reference table to a variable
kbuild: vdso_install: drop build ID architecture allow-list
kbuild: vdso_install: gracefully handle images without build ID
kbuild: vdso_install: hide readelf warnings
kbuild: vdso_install: split out the readelf invocation
kbuild: uapi: also test UAPI headers against C++ compilers
kbuild: uapi: provide a C++ compatible dummy definition of NULL
kbuild: uapi: handle UML in architecture-specific exclusion lists
kbuild: uapi: move all include path flags together
kbuild: uapi: move some compiler arguments out of the command definition
check-uapi: use dummy libc includes
check-uapi: honor ${CROSS_COMPILE} setting
check-uapi: link into shared objects
kbuild: reduce output spam when building out of tree
...
Merge tag 'bitmap-for-v7.1' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
- new API: bitmap_weight_from() and bitmap_weighted_xor() (Yury)
- drop unused __find_nth_andnot_bit() (Yury)
- new tests and test improvements (Andy, Akinobu, Yury)
- fixes for count_zeroes API (Yury)
- cleanup bitmap_print_to_pagebuf() mess (Yury)
- documentation updates (Andy, Kai, Kit).
* tag 'bitmap-for-v7.1' of https://github.com/norov/linux: (24 commits)
bitops: Update kernel-doc for sign_extendXX()
powerpc/xive: simplify xive_spapr_debug_show()
thermal: intel: switch cpumask_get() to using cpumask_print_to_pagebuf()
coresight: don't use bitmap_print_to_pagebuf()
lib/prime_numbers: drop temporary buffer in dump_primes()
drm/xe: switch xe_pagefault_queue_init() to using bitmap_weighted_or()
ice: use bitmap_empty() in ice_vf_has_no_qs_ena
ice: use bitmap_weighted_xor() in ice_find_free_recp_res_idx()
bitmap: introduce bitmap_weighted_xor()
bitmap: add test_zero_nbits()
bitmap: exclude nbits == 0 cases from bitmap test
bitmap: test bitmap_weight() for more
asm-generic/bitops: Fix a comment typo in instrumented-atomic.h
bitops: fix kernel-doc parameter name for parity8()
lib: count_zeros: unify count_{leading,trailing}_zeros()
lib: count_zeros: fix 32/64-bit inconsistency in count_trailing_zeros()
lib: crypto: fix comments for count_leading_zeros()
x86/topology: use bitmap_weight_from()
bitmap: add bitmap_weight_from()
lib/find_bit_benchmark: avoid clearing randomly filled bitmap in test_find_first_bit()
...
Merge tag 'docs-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux
Pull documentation updates from Jonathan Corbet:
"A busier cycle than I had expected for docs, including:
- Translations: some overdue updates to the Japanese translations,
Chinese translations for some of the Rust documentation, and the
beginnings of a Portuguese translation.
- New documents covering CPU isolation, managed interrupts, debugging
Python gbb scripts, and more.
- More tooling work from Mauro, reducing docs-build warnings, adding
self tests, improving man-page output, bringing in a proper C
tokenizer to replace (some of) the mess of kernel-doc regexes, and
more.
- Update and synchronize changes.rst and scripts/ver_linux, and put
both into alphabetical order.
... and a long list of documentation updates, typo fixes, and general
improvements"
* tag 'docs-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (162 commits)
Documentation: core-api: real-time: correct spelling
doc: Add CPU Isolation documentation
Documentation: Add managed interrupts
Documentation: seq_file: drop 2.6 reference
docs/zh_CN: update rust/index.rst translation
docs/zh_CN: update rust/quick-start.rst translation
docs/zh_CN: update rust/coding-guidelines.rst translation
docs/zh_CN: update rust/arch-support.rst translation
docs/zh_CN: sync process/2.Process.rst with English version
docs/zh_CN: fix an inconsistent statement in dev-tools/testing-overview
tracing: Documentation: Update histogram-design.rst for fn() handling
docs: sysctl: Add documentation for /proc/sys/xen/
Docs: hid: intel-ish-hid: make long URL usable
Documentation/kernel-parameters: fix architecture alignment for pt, nopt, and nobypass
sched/doc: Update yield_task description in sched-design-CFS
Documentation/rtla: Convert links to RST format
docs: fix typos and duplicated words across documentation
docs: fix typo in zoran driver documentation
docs: add an Assisted-by mention to submitting-patches.rst
Revert "scripts/checkpatch: add Assisted-by: tag validation"
...
Merge tag 'pwrseq-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull power sequencing updates from Bartosz Golaszewski:
"For this release we have an extension of the pwrseq-pcie-m2 driver
with support for PCIe M.2 Key E connectors.
The rest of the commits fulfill a supporting role: document the
hardware in DT bindings, provide required serdev helpers (this has
been provided in an immutable branch to Rob Herring so you may see it
in his PR as well) and is followed up by some Kconfig fixes from Arnd.
Summary:
- add support for the PCIe M.2 Key E connectors in pwrseq-pcie-m2
- describe PCIe M.2 Mechanical Key E connectors in DT bindings
- add serdev helpers for looking up devices by OF nodes
- minor serdev core rework to enable support for PCIe M.2 Key E
connectors"
* tag 'pwrseq-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
power: sequencing: pcie-m2: add SERIAL_DEV_BUS dependency
power: sequencing: pcie-m2: enforce PCI and OF dependencies
power: sequencing: pcie-m2: Create serdev device for WCN7850 bluetooth
power: sequencing: pcie-m2: Add support for PCIe M.2 Key E connectors
dt-bindings: connector: Add PCIe M.2 Mechanical Key E connector
dt-bindings: serial: Document the graph port
serdev: Do not return -ENODEV from of_serdev_register_devices() if external connector is used
serdev: Add an API to find the serdev controller associated with the devicetree node
serdev: Convert to_serdev_*() helpers to macros and use container_of_const()
Merge tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"For this merge window we have two new drivers: support for
GPIO-signalled ACPI events on Intel platforms and a generic
GPIO-over-pinctrl driver using the ARM SCMI protocol for
controlling pins.
Several things have been reworked in GPIO core: we unduplicated GPIO
hog handling, reduced the number of SRCU locks and dereferences,
improved support for software-node-based lookup and removed more
legacy code after converting remaining users to modern alternatives.
There's also a number of driver reworks and refactoring, documentation
updates, some bug-fixes and new tests.
GPIO core:
- defer probe on software node lookups when the remote software node
exists but has not been registered as a firmware node yet
- unify GPIO hog handling by moving code duplicated in OF and ACPI
modules into GPIO core and allow setting up hogs with software
nodes
- allow matching GPIO controllers by secondary firmware node if
matching by primary does not succeed
- demote deferral warnings to debug level as they are quite normal
when using software nodes which don't support fw_devlink yet
- disable the legacy GPIO character device uAPI v1 supprt in Kconfig
by default
- rework several core functions in preparation for the upcoming
Revocable helper library for protecting resources against sudden
removal, this reduces the number of SRCU dereferences in GPIO core
- simplify file descriptor logic in GPIO character device code by
using FD_PREPARE()
- introduce a header defining symbols used by both GPIO consumers and
providers to avoid having to include provider-specific headers from
drivers which only consume GPIOs
- replace snprintf() with strscpy() where formatting is not required
New drivers:
- add the gpio-by-pinctrl generic driver using the ARM SCMI protocol
to control GPIOs (along with SCMI changes pulled from the pinctrl
tree)
- add a driver providing support for handling of platform events via
GPIO-signalled ACPI events (used on Intel Nova Lake and later
platforms)
Driver changes:
- extend the gpio-kempld driver with support for more recent models,
interrupts and setting/getting multiple values at once
- improve interrupt handling in gpio-brcmstb
- add support for multi-SoC systems in gpio-tegra186
- make sure we return correct values from the .get() callbacks in
several GPIO drivers by normalizing any values other than 0, 1 or
negative error numbers
- use flexible arrays in several drivers to reduce the number of
required memory allocations
- simplify synchronous waiting for virtual drivers to probe and
remove the dedicated, a bit overengineered helper library
dev-sync-probe
- remove unneeded Kconfig dependencies on OF_GPIO in several drivers
and subsystems
- convert the two remaining users of of_get_named_gpio() to using
GPIO descriptors and remove the (no longer used) function along
with the header that declares it
- add missing includes in gpio-mmio
- shrink and simplify code in gpio-max732x by using guard(mutex)
- remove duplicated code handling the 'ngpios' property from
gpio-ts4800, it's already handled in GPIO core
- use correct variable type in gpio-aspeed
- add support for a new model in gpio-realtek-otto
- allow to specify the active-low setting of simulated hogs over the
configfs interface (in addition to existing devicetree support) in
gpio-sim
Bug fixes:
- clear the OF_POPULATED flag on hog nodes in GPIO chip remove path
on OF systems
- fix resource leaks in error path in gpiochip_add_data_with_key()
- drop redundant device reference in gpio-mpsse
Tests:
- add selftests for use-after-free cases in GPIO character device
code
DT bindings:
- add a DT binding document for SCMI based, gpio-over-pinctrl devices
- fix interrupt description in microchip,mpfs-gpio
- add new compatible for gpio-realtek-otto
- describe the resets of the mpfs-gpio controller
- fix maintainer's email in gpio-delay bindings
- remove the binding document for cavium,thunder-8890 as the
corresponding device is bound over PCI and not firmware nodes
Documentation:
- update the recommended way of converting legacy boards to using
software nodes for GPIO description
- describe GPIO line value semantics
- misc updates to kerneldocs
Misc:
- convert OMAP1 ams-delta board to using GPIO hogs described with
software nodes"
* tag 'gpio-updates-for-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits)
gpio: swnode: defer probe on references to unregistered software nodes
dt-bindings: gpio: cavium,thunder-8890: Remove DT binding
Documentation: gpio: update the preferred method for using software node lookup
gpio: gpio-by-pinctrl: s/used to do/is used to do/
gpio: aspeed: fix unsigned long int declaration
gpio: rockchip: convert to dynamic GPIO base allocation
gpio: remove dev-sync-probe
gpio: virtuser: stop using dev-sync-probe
gpio: aggregator: stop using dev-sync-probe
gpio: sim: stop using dev-sync-probe
gpio: Add Intel Nova Lake ACPI GPIO events driver
gpiolib: Make deferral warnings debug messages
gpiolib: fix hogs with multiple lines
gpio: fix up CONFIG_OF dependencies
gpio: gpio-by-pinctrl: add pinctrl based generic GPIO driver
gpio: dt-bindings: Add GPIO on top of generic pin control
firmware: arm_scmi: Allow PINCTRL_REQUEST to return EOPNOTSUPP
pinctrl: scmi: ignore PIN_CONFIG_PERSIST_STATE
pinctrl: scmi: Delete PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS support
pinctrl: scmi: Add SCMI_PIN_INPUT_VALUE
...
Merge tag 'thermal-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These include thermal core fixes and simplifications, driver fixes and
new hardware support (SDM670, Eliza SoC), new driver features (hwmon
support in imx91, DDR data rate on Nova Lake in int340x), and a
handful of cleanups:
- Fix thermal core issues related to thermal zone removal and
registration errors that may lead to a use-after-free or a memory
leak in some cases (Rafael Wysocki)
- Drop a redundant check from thermal_zone_device_update(), adjust
thermal workqueue allocation flags, and switch over thermal_class
allocation to static (Rafael Wysocki)
- Relocate the suspend and resume of thermal zones closer to the
suspend and resume of devices, respectively (Rafael Wysocki)
- Remove a pointless variable used in the thermal core when
registering a cooling device (Daniel Lezcano)
- Replace sprintf() in thermal_bind_cdev_to_trip() and use
str_enabled_disabled() helper in mode_show() (Thorsten Blum)
- Replace cpumask_weight() in intel_hfi_offline() with
cpumask_empty() which is generally more efficient (Yury Norov)
- Add support for reading DDR data rate from PCI config space on Nova
Lake platforms to the int340x thermal driver (Srinivas Pandruvada)
- Add an OF node address to output message to make sensor names more
distinguishable (Alexander Stein)
- Add hwmon support for the i.MX97 thermal sensor (Alexander Stein)
- Clamp correctly the results when doing value/temperature conversion
in the Spreadtrum driver (Thorsten Blum)
- Add SDM670 compatible DT bindings for the Tsens and the lMH thermal
drivers (Richard Acayan)
- Add SM8750 compatible DT bindings for the Tsens thermal driver
(Manaf Meethalavalappu Pallikunhi)
- Add Eliza SoC compatible DT bindings for the Tsens driver
(Krzysztof Kozlowski)
- Fix inverted condition check on error in the Spear thermal control
driver (Gopi Krishna Menon)
- Use max() macro to increase readability in the Broadcom STB thermal
sensor (Thorsten Blum)
- Remove a stale @trim_offset kernel-doc entry (John Madieu)"
* tag 'thermal-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (25 commits)
thermal: renesas: rzg3e: Remove stale @trim_offset kernel-doc entry
thermal: core: Suspend thermal zones later and resume them earlier
thermal: core: Allocate thermal_class statically
thermal: core: Adjust thermal_wq allocation flags
thermal: core: Drop redundant check from thermal_zone_device_update()
thermal: core: Free thermal zone ID later during removal
thermal: core: Fix thermal zone governor cleanup issues
thermal/core: Remove pointless variable when registering a cooling device
thermal/drivers/brcmstb_thermal: Use max to simplify brcmstb_get_temp
dt-bindings: thermal: st,thermal-spear1340: convert to dtschema
thermal/drivers/spear: Fix error condition for reading st,thermal-flags
dt-bindings: thermal: qcom-tsens: Add Eliza SoC TSENS
thermal: devfreq_cooling: avoid unnecessary kfree of freq_table
thermal: intel: hfi: use cpumask_empty() in intel_hfi_offline()
thermal: sysfs: Use str_enabled_disabled() helper in mode_show()
dt-bindings: thermal: qcom-tsens: Document the SM8750 Temperature Sensor
thermal/drivers/sprd: Use min instead of clamp in sprd_thm_temp_to_rawdata
dt-bindings: thermal: lmh: Add SDM670 compatible
dt-bindings: thermal: tsens: add SDM670 compatible
thermal/drivers/sprd: Fix raw temperature clamping in sprd_thm_rawdata_to_temp
...
Merge tag 'pm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"Once again, cpufreq is the most active development area, mostly
because of the new feature additions and documentation updates in the
amd-pstate driver, but there are also changes in the cpufreq core
related to boost support and other assorted updates elsewhere.
Next up are power capping changes due to the major cleanup of the
Intel RAPL driver.
On the cpuidle front, a new C-states table for Intel Panther Lake is
added to the intel_idle driver, the stopped tick handling in the menu
and teo governors is updated, and there are a couple of cleanups.
Apart from the above, support for Tegra114 is added to devfreq and
there are assorted cleanups of that code, there are also two updates
of the operating performance points (OPP) library, two minor updates
related to hibernation, and cpupower utility man pages updates and
cleanups.
Specifics:
- Update qcom-hw DT bindings to include Eliza hardware (Abel Vesa)
- Minor updates to driver and dt-bindings for Tegra (Thierry Reding,
Rosen Penev)
- Add MAINTAINERS entry for CPPC driver (Viresh Kumar)
- Add support for new features: CPPC performance priority, Dynamic
EPP, Raw EPP, and new unit tests for them to amd-pstate (Gautham
Shenoy, Mario Limonciello)
- Fix sysfs files being present when HW missing and broken/outdated
documentation in the amd-pstate driver (Ninad Naik, Gautham Shenoy)
- Pass the policy to cpufreq_driver->adjust_perf() to avoid using
cpufreq_cpu_get() in the .adjust_perf() callback in amd-pstate
which leads to a scheduling-while-atomic bug (K Prateek Nayak)
- Clean up dead code in Kconfig for cpufreq (Julian Braha)
- Remove max_freq_req update for pre-existing cpufreq policy and add
a boost_freq_req QoS request to save the boost constraint instead
of overwriting the last scaling_max_freq constraint (Pierre
Gondois)
- Embed cpufreq QoS freq_req objects in cpufreq policy so they all
are allocated in one go along with the policy to simplify lifetime
rules and avoid error handling issues (Viresh Kumar)
- Use DMI max speed when CPPC is unavailable in the acpi-cpufreq
scaling driver (Henry Tseng)
- Switch policy_is_shared() in cpufreq to using cpumask_nth() instead
of cpumask_weight() because the former is more efficient (Yury
Norov)
- Use sysfs_emit() in sysfs show functions for cpufreq governor
attributes (Thorsten Blum)
- Update intel_pstate to stop returning an error when "off" is
written to its status sysfs attribute while the driver is already
off (Fabio De Francesco)
- Include current frequency in the debug message printed by
__cpufreq_driver_target() (Pengjie Zhang)
- Refine stopped tick handling in the menu cpuidle governor and
rearrange stopped tick handling in the teo cpuidle governor (Rafael
Wysocki)
- Add Panther Lake C-states table to the intel_idle driver (Artem
Bityutskiy)
- Clean up dead dependencies on CPU_IDLE in Kconfig (Julian Braha)
- Simplify cpuidle_register_device() with guard() (Huisong Li)
- Use performance level if available to distinguish between rates in
OPP debugfs (Manivannan Sadhasivam)
- Fix scoped_guard in dev_pm_opp_xlate_required_opp() (Viresh Kumar)
- Return -ENODATA if the snapshot image is not loaded (Alberto
Garcia)
- Remove inclusion of crypto/hash.h from hibernate_64.c on x86 (Eric
Biggers)
- Clean up and rearrange the intel_rapl power capping driver to make
the respective interface drivers (TPMI, MSR, and MMOI) hold their
own settings and primitives and consolidate PL4 and PMU support
flags into rapl_defaults (Kuppuswamy Sathyanarayanan)
- Correct kernel-doc function parameter names in the power capping
core code (Randy Dunlap)
- Remove unneeded casting for HZ_PER_KHZ in devfreq (Andy Shevchenko)
- Use _visible attribute to replace create/remove_sysfs_files() in
devfreq (Pengjie Zhang)
- Add Tegra114 support to activity monitor device in tegra30-devfreq
as a preparation to upcoming EMC controller support (Svyatoslav
Ryhel)
- Fix mistakes in cpupower man pages, add the boost and epp options
to the cpupower-frequency-info man page, and add the perf-bias
option to the cpupower-info man page (Roberto Ricci)
- Remove unnecessary extern declarations from getopt.h in arguments
parsing functions in cpufreq-set, cpuidle-info, cpuidle-set,
cpupower-info, and cpupower-set utilities (Kaushlendra Kumar)"
* tag 'pm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (74 commits)
cpufreq/amd-pstate: Add POWER_SUPPLY select for dynamic EPP
cpupower: remove extern declarations in cmd functions
cpuidle: Simplify cpuidle_register_device() with guard()
PM / devfreq: tegra30-devfreq: add support for Tegra114
PM / devfreq: use _visible attribute to replace create/remove_sysfs_files()
PM / devfreq: Remove unneeded casting for HZ_PER_KHZ
MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer
cpufreq: Pass the policy to cpufreq_driver->adjust_perf()
cpufreq/amd-pstate: Pass the policy to amd_pstate_update()
cpufreq/amd-pstate-ut: Add a unit test for raw EPP
cpufreq/amd-pstate: Add support for raw EPP writes
cpufreq/amd-pstate: Add support for platform profile class
cpufreq/amd-pstate: add kernel command line to override dynamic epp
cpufreq/amd-pstate: Add dynamic energy performance preference
Documentation: amd-pstate: fix dead links in the reference section
cpufreq/amd-pstate: Cache the max frequency in cpudata
Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count}
Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file
Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file
amd-pstate-ut: Add a testcase to validate the visibility of driver attributes
...
Merge tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI support updates from Rafael Wysocki:
"These include an update of the CMOS RTC driver and the related ACPI
and x86 code that, among other things, switches it over to using the
platform device interface for device binding on x86 instead of the PNP
device driver interface (which allows the code in question to be
simplified quite a bit), a major update of the ACPI Time and Alarm
Device (TAD) driver adding an RTC class device interface to it, and
updates of core ACPI drivers that remove some unnecessary and not
really useful code from them.
Apart from that, two drivers are converted to using the platform
driver interface for device binding instead of the ACPI driver one,
which is slated for removal, support for the Performance Limited
register is added to the ACPI CPPC library and there are some
janitorial updates of it and the related cpufreq CPPC driver, the ACPI
processor driver is fixed and cleaned up, and NVIDIA vendor CPER
record handler is added to the APEI GHES code.
Also, the interface for obtaining a CPU UID from ACPI is consolidated
across architectures and used for fixing a problem with the PCI TPH
Steering Tag on ARM64, there are two updates related to ACPICA, a
minor ACPI OS Services Layer (OSL) update, and a few assorted updates
related to ACPI tables parsing.
Specifics:
- Update maintainers information regarding ACPICA (Rafael Wysocki)
- Replace strncpy() with strscpy_pad() in acpi_ut_safe_strncpy()
(Kees Cook)
- Trigger an ordered system power off after encountering a fatal
error operator in AML (Armin Wolf)
- Enable ACPI FPDT parsing on LoongArch (Xi Ruoyao)
- Remove the temporary stop-gap acpi_pptt_cache_v1_full structure
from the ACPI PPTT parser (Ben Horgan)
- Add support for exposing ACPI FPDT subtables FBPT and S3PT (Nate
DeSimone)
- Address multiple assorted issues and clean up the code in the ACPI
processor idle driver (Huisong Li)
- Replace strlcat() in the ACPI processor idle drive with a better
alternative (Andy Shevchenko)
- Rearrange and clean up acpi_processor_errata_piix4() (Rafael
Wysocki)
- Move reference performance to capabilities and fix an uninitialized
variable in the ACPI CPPC library (Pengjie Zhang)
- Add support for the Performance Limited Register to the ACPI CPPC
library (Sumit Gupta)
- Add cppc_get_perf() API to read performance controls, extend
cppc_set_epp_perf() for FFH/SystemMemory, and make the ACPI CPPC
library warn on missing mandatory DESIRED_PERF register (Sumit
Gupta)
- Modify the cpufreq CPPC driver to update MIN_PERF/MAX_PERF in
target callbacks to allow it to control performance bounds via
standard scaling_min_freq and scaling_max_freq sysfs attributes and
add sysfs documentation for the Performance Limited Register to it
(Sumit Gupta)
- Add ACPI support to the platform device interface in the CMOS RTC
driver, make the ACPI core device enumeration code create a
platform device for the CMOS RTC, and drop CMOS RTC PNP device
support (Rafael Wysocki)
- Consolidate the x86-specific CMOS RTC handling with the ACPI TAD
driver and clean up the CMOS RTC ACPI address space handler (Rafael
Wysocki)
- Enable ACPI alarm in the CMOS RTC driver if advertised in ACPI FADT
and allow that driver to work without a dedicated IRQ if the ACPI
alarm is used (Rafael Wysocki)
- Clean up the ACPI TAD driver in various ways and add an RTC class
device interface, including both the RTC setting/reading and alarm
timer support, to it (Rafael Wysocki)
- Clean up the ACPI AC and ACPI PAD (processor aggregator device)
drivers (Rafael Wysocki)
- Rework checking for duplicate video bus devices and consolidate
pnp.bus_id workarounds handling in the ACPI video bus driver
(Rafael Wysocki)
- Update the ACPI core device drivers to stop setting
acpi_device_name() unnecessarily (Rafael Wysocki)
- Rearrange code using acpi_device_class() in the ACPI core device
drivers and update them to stop setting acpi_device_class()
unnecessarily (Rafael Wysocki)
- Define ACPI_AC_CLASS in one place (Rafael Wysocki)
- Convert the ni903x_wdt watchdog driver and the xen ACPI PAD driver
to bind to platform devices instead of ACPI devices (Rafael
Wysocki)
- Add devm_ghes_register_vendor_record_notifier(), use it in the PCI
hisi driver, and Add NVIDIA vendor CPER record handler (Kai-Heng
Feng)
- Consolidate the interface for obtaining a CPU UID from ACPI across
architectures and use it to address incorrect PCI TPH Steering Tag
on ARM64 resulting from the invalid assumption that the ACPI
Processor UID would always be the same as the corresponding logical
CPU ID in Linux (Chengwen Feng)"
* tag 'acpi-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (73 commits)
ACPICA: Update maintainers information
watchdog: ni903x_wdt: Convert to a platform driver
ACPI: PAD: xen: Convert to a platform driver
ACPI: processor: idle: Reset cpuidle on C-state list changes
cpuidle: Extract and export no-lock variants of cpuidle_unregister_device()
PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM
ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()
perf: arm_cspmu: Switch to acpi_get_cpu_uid() from get_acpi_id_for_cpu()
ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h
x86/acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
ACPI: APEI: GHES: Add NVIDIA vendor CPER record handler
PCI: hisi: Use devm_ghes_register_vendor_record_notifier()
ACPI: APEI: GHES: Add devm_ghes_register_vendor_record_notifier()
ACPI: tables: Enable FPDT on LoongArch
ACPI: processor: idle: Fix NULL pointer dereference in hotplug path
ACPI: processor: idle: Reset power_setup_done flag on initialization failure
ACPI: TAD: Add alarm support to the RTC class device interface
...
Merge tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"debugfs:
- Fix NULL pointer dereference in debugfs_create_str()
- Fix misplaced EXPORT_SYMBOL_GPL for debugfs_create_str()
- Fix soundwire debugfs NULL pointer dereference from uninitialized
firmware_file
device property:
- Make fwnode flags modifications thread safe; widen the field to
unsigned long and use set_bit() / clear_bit() based accessors
- Document how to check for the property presence
devres:
- Separate struct devres_node from its "subclasses" (struct devres,
struct devres_group); give struct devres_node its own release and
free callbacks for per-type dispatch
- Introduce struct devres_action for devres actions, avoiding the
ARCH_DMA_MINALIGN alignment overhead of struct devres
- Export struct devres_node and its init/add/remove/dbginfo
primitives for use by Rust Devres<T>
- Fix missing node debug info in devm_krealloc()
- Use guard(spinlock_irqsave) where applicable; consolidate unlock
paths in devres_release_group()
driver_override:
- Convert PCI, WMI, vdpa, s390/cio, s390/ap, and fsl-mc to the
generic driver_override infrastructure, replacing per-bus
driver_override strings, sysfs attributes, and match logic; fixes a
potential UAF from unsynchronized access to driver_override in bus
match() callbacks
- Simplify __device_set_driver_override() logic
kernfs:
- Send IN_DELETE_SELF and IN_IGNORED inotify events on kernfs file
and directory removal
- Add corresponding selftests for memcg
platform:
- Allow attaching software nodes when creating platform devices via a
new 'swnode' field in struct platform_device_info
- Add kerneldoc for struct platform_device_info
software node:
- Move software node initialization from postcore_initcall() to
driver_init(), making it available early in the boot process
- Move kernel_kobj initialization (ksysfs_init) earlier to support
the above
- Remove software_node_exit(); dead code in a built-in unit
SoC:
- Introduce of_machine_read_compatible() and of_machine_read_model()
OF helpers and export soc_attr_read_machine() to replace direct
accesses to of_root from SoC drivers; also enables
CONFIG_COMPILE_TEST coverage for these drivers
sysfs:
- Constify attribute group array pointers to
'const struct attribute_group *const *' in sysfs functions,
device_add_groups() / device_remove_groups(), and struct class
Rust:
- Devres:
- Embed struct devres_node directly in Devres<T> instead of going
through devm_add_action(), avoiding the extra allocation and the
unnecessary ARCH_DMA_MINALIGN alignment
- I/O:
- Turn IoCapable from a marker trait into a functional trait
carrying the raw I/O accessor implementation (io_read /
io_write), providing working defaults for the per-type Io
methods
- Add RelaxedMmio wrapper type, making relaxed accessors usable in
code generic over the Io trait
- Remove overloaded per-type Io methods and per-backend macros
from Mmio and PCI ConfigSpace
- I/O (Register):
- Add IoLoc trait and generic read/write/update methods to the Io
trait, making I/O operations parameterizable by typed locations
- Add register! macro for defining hardware register types with
typed bitfield accessors backed by Bounded values; supports
direct, relative, and array register addressing
- Add write_reg() / try_write_reg() and LocatedRegister trait
- Update PCI sample driver to demonstrate the register! macro
- IRQ:
- Move 'static bounds from where clauses to trait declarations for
IRQ handler traits
- Misc:
- Enable the generic_arg_infer Rust feature
- Extend Bounded with shift operations, single-bit bool
conversion, and const get()
Misc:
- Make deferred_probe_timeout default a Kconfig option
- Drop auxiliary_dev_pm_ops; the PM core falls back to driver PM
callbacks when no bus type PM ops are set
- Add conditional guard support for device_lock()
- Add ksysfs.c to the DRIVER CORE MAINTAINERS entry
- Fix kernel-doc warnings in base.h
- Fix stale reference to memory_block_add_nid() in documentation"
* tag 'driver-core-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (67 commits)
bus: fsl-mc: use generic driver_override infrastructure
s390/ap: use generic driver_override infrastructure
s390/cio: use generic driver_override infrastructure
vdpa: use generic driver_override infrastructure
platform/wmi: use generic driver_override infrastructure
PCI: use generic driver_override infrastructure
driver core: make software nodes available earlier
software node: remove software_node_exit()
kernel: ksysfs: initialize kernel_kobj earlier
MAINTAINERS: add ksysfs.c to the DRIVER CORE entry
drivers/base/memory: fix stale reference to memory_block_add_nid()
device property: Document how to check for the property presence
soundwire: debugfs: initialize firmware_file to empty string
debugfs: fix placement of EXPORT_SYMBOL_GPL for debugfs_create_str()
debugfs: check for NULL pointer in debugfs_create_str()
driver core: Make deferred_probe_timeout default a Kconfig option
driver core: simplify __device_set_driver_override() clearing logic
driver core: auxiliary bus: Drop auxiliary_dev_pm_ops
device property: Make modifications of fwnode "flags" thread safe
rust: devres: embed struct devres_node directly
...
Merge tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
- randomize_kstack: Improve implementation across arches (Ryan Roberts)
- lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test
- refcount: Remove unused __signed_wrap function annotations
* tag 'hardening-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
lkdtm/fortify: Drop unneeded FORTIFY_STR_OBJECT test
refcount: Remove unused __signed_wrap function annotations
randomize_kstack: Unify random source across arches
randomize_kstack: Maintain kstack_offset per task
* tag 'execve-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
sched: update task_struct->comm comment
exec: use strnlen() in __set_task_comm
Merge tag 'pstore-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull pstore updates from Kees Cook:
- fix ftrace dump when ECC is enabled (Andrey Skvortsov)
- fix resource leak when ioremap() fails (Cole Leavitt)
- Remove useless memblock header (Guilherme G. Piccoli)
- Fix ECC parameter help text (Guilherme G. Piccoli)
- Keep ftrace module parameter and debugfs switch in sync (Guilherme G.
Piccoli)
- Factor KASLR offset in the core kernel instruction addresses
(Guilherme G. Piccoli)
* tag 'pstore-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore/ftrace: Factor KASLR offset in the core kernel instruction addresses
pstore/ftrace: Keep ftrace module parameter and debugfs switch in sync
pstore/ram: fix resource leak when ioremap() fails
pstore/ramoops: Fix ECC parameter help text
pstore/ramoops: Remove useless memblock header
pstore: fix ftrace dump, when ECC is enabled
Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull CRC updates from Eric Biggers:
- Several improvements related to crc_kunit, to align with the standard
KUnit conventions and make it easier for developers and CI systems to
run this test suite
- Add an arm64-optimized implementation of CRC64-NVME
- Remove unused code for big endian arm64
* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux:
lib/crc: arm64: Simplify intrinsics implementation
lib/crc: arm64: Use existing macros for kernel-mode FPU cflags
lib/crc: arm64: Drop unnecessary chunking logic from crc64
lib/crc: arm64: Assume a little-endian kernel
lib/crc: arm64: add NEON accelerated CRC64-NVMe implementation
lib/crc: arm64: Drop check for CONFIG_KERNEL_MODE_NEON
crypto: crc32c - Remove another outdated comment
crypto: crc32c - Remove more outdated usage information
kunit: configs: Enable all CRC tests in all_tests.config
lib/crc: tests: Add a .kunitconfig file
lib/crc: tests: Add CRC_ENABLE_ALL_FOR_KUNIT
lib/crc: tests: Make crc_kunit test only the enabled CRC variants
Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers:
- Migrate more hash algorithms from the traditional crypto subsystem to
lib/crypto/
Like the algorithms migrated earlier (e.g. SHA-*), this simplifies
the implementations, improves performance, enables further
simplifications in calling code, and solves various other issues:
- AES CBC-based MACs (AES-CMAC, AES-XCBC-MAC, and AES-CBC-MAC)
- Support these algorithms in lib/crypto/ using the AES library
and the existing arm64 assembly code
- Reimplement the traditional crypto API's "cmac(aes)",
"xcbc(aes)", and "cbcmac(aes)" on top of the library
- Convert mac80211 to use the AES-CMAC library. Note: several
other subsystems can use it too and will be converted later
- Drop the broken, nonstandard, and likely unused support for
"xcbc(aes)" with key lengths other than 128 bits
- Enable optimizations by default
- GHASH
- Migrate the standalone GHASH code into lib/crypto/
- Integrate the GHASH code more closely with the very similar
POLYVAL code, and improve the generic GHASH implementation to
resist cache-timing attacks and use much less memory
- Reimplement the AES-GCM library and the "gcm" crypto_aead
template on top of the GHASH library. Remove "ghash" from the
crypto_shash API, as it's no longer needed
- Enable optimizations by default
- SM3
- Migrate the kernel's existing SM3 code into lib/crypto/, and
reimplement the traditional crypto API's "sm3" on top of it
- I don't recommend using SM3, but this cleanup is worthwhile
to organize the code the same way as other algorithms
- Testing improvements:
- Add a KUnit test suite for each of the new library APIs
- Migrate the existing ChaCha20Poly1305 test to KUnit
- Make the KUnit all_tests.config enable all crypto library tests
- Move the test kconfig options to the Runtime Testing menu
- Other updates to arch-optimized crypto code:
- Optimize SHA-256 for Zhaoxin CPUs using the Padlock Hash Engine
- Remove some MD5 implementations that are no longer worth keeping
- Drop big endian and voluntary preemption support from the arm64
code, as those configurations are no longer supported on arm64
- Make jitterentropy and samples/tsm-mr use the crypto library APIs
* tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (66 commits)
lib/crypto: arm64: Assume a little-endian kernel
arm64: fpsimd: Remove obsolete cond_yield macro
lib/crypto: arm64/sha3: Remove obsolete chunking logic
lib/crypto: arm64/sha512: Remove obsolete chunking logic
lib/crypto: arm64/sha256: Remove obsolete chunking logic
lib/crypto: arm64/sha1: Remove obsolete chunking logic
lib/crypto: arm64/poly1305: Remove obsolete chunking logic
lib/crypto: arm64/gf128hash: Remove obsolete chunking logic
lib/crypto: arm64/chacha: Remove obsolete chunking logic
lib/crypto: arm64/aes: Remove obsolete chunking logic
lib/crypto: Include <crypto/utils.h> instead of <crypto/algapi.h>
lib/crypto: aesgcm: Don't disable IRQs during AES block encryption
lib/crypto: aescfb: Don't disable IRQs during AES block encryption
lib/crypto: tests: Migrate ChaCha20Poly1305 self-test to KUnit
lib/crypto: sparc: Drop optimized MD5 code
lib/crypto: mips: Drop optimized MD5 code
lib: Move crypto library tests to Runtime Testing menu
crypto: sm3 - Remove 'struct sm3_state'
crypto: sm3 - Remove the original "sm3_block_generic()"
crypto: sm3 - Remove sm3_base.h
...
Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux
Pull fscrypt updates from Eric Biggers:
- Various cleanups for the interface between fs/crypto/ and
filesystems, from Christoph Hellwig
- Simplify and optimize the implementation of v1 key derivation by
using the AES library instead of the crypto_skcipher API
* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
fscrypt: use AES library for v1 key derivation
ext4: use a byte granularity cursor in ext4_mpage_readpages
fscrypt: pass a real sector_t to fscrypt_zeroout_range
fscrypt: pass a byte length to fscrypt_zeroout_range
fscrypt: pass a byte offset to fscrypt_zeroout_range
fscrypt: pass a byte length to fscrypt_zeroout_range_inline_crypt
fscrypt: pass a byte offset to fscrypt_zeroout_range_inline_crypt
fscrypt: pass a byte offset to fscrypt_set_bio_crypt_ctx
fscrypt: pass a byte offset to fscrypt_mergeable_bio
fscrypt: pass a byte offset to fscrypt_generate_dun
fscrypt: move fscrypt_set_bio_crypt_ctx_bh to buffer.c
ext4, fscrypt: merge fscrypt_mergeable_bio_bh into io_submit_need_new_bio
ext4: factor out a io_submit_need_new_bio helper
ext4: open code fscrypt_set_bio_crypt_ctx_bh
ext4: initialize the write hint in io_submit_init_bio
* tag 'v7.1-rc1-part1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6: (26 commits)
smb: client: allow both 'lease' and 'nolease' mount options
smb: client: get rid of d_drop()+d_add()
smb: client: set ATTR_TEMPORARY with O_TMPFILE | O_EXCL
smb: client: add support for O_TMPFILE
vfs: introduce d_mark_tmpfile_name()
MAINTAINERS: create entry for smbdirect
smb: client: add missing MODULE_DESCRIPTION() to smb1maperror_test
smb: client: fix OOB reads parsing symlink error response
smb: client: fix off-by-8 bounds check in check_wsl_eas()
smb: client: Remove unnecessary selection of CRYPTO_ECB
smb/client: move smb2maperror declarations to smb2proto.h
smb/client: introduce KUnit tests to check DOS/SRV err mapping search
smb/client: check if SMB1 DOS/SRV error mapping arrays are sorted
smb/client: use binary search for SMB1 DOS/SRV error mapping
smb/client: autogenerate SMB1 DOS/SRV to POSIX error mapping
smb/client: annotate smberr.h with POSIX error codes
smb/client: move ERRnetlogonNotStarted to DOS error class
smb/client: introduce KUnit test to check ntstatus_to_dos_map search
smb/client: check if ntstatus_to_dos_map is sorted
smb/client: use binary search for NT status to DOS mapping
...
Merge tag 'xfs-merge-7.1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Carlos Maiolino:
"There aren't any new features.
The whole series is just a collection of bug fixes and code
refactoring. There is some new information added a couple new
tracepoints, new data added to mountstats, but no big changes"
* tag 'xfs-merge-7.1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (41 commits)
xfs: fix number of GC bvecs
xfs: untangle the open zones reporting in mountinfo
xfs: expose the number of open zones in sysfs
xfs: reduce special casing for the open GC zone
xfs: streamline GC zone selection
xfs: refactor GC zone selection helpers
xfs: rename xfs_zone_gc_iter_next to xfs_zone_gc_iter_irec
xfs: put the open zone later xfs_open_zone_put
xfs: add a separate tracepoint for stealing an open zone for GC
xfs: delay initial open of the GC zone
xfs: fix a resource leak in xfs_alloc_buftarg()
xfs: handle too many open zones when mounting
xfs: refactor xfs_mount_zones
xfs: fix integer overflow in busy extent sort comparator
xfs: fix integer overflow in deferred intent sort comparators
xfs: fold xfs_setattr_size into xfs_vn_setattr_size
xfs: remove a duplicate assert in xfs_setattr_size
xfs: return default quota limits for IDs without a dquot
xfs: start gc on zonegc_low_space attribute updates
xfs: don't decrement the buffer LRU count for in-use buffers
...
Merge tag 'erofs-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
- Validate xattr h_shared_count to report -EFSCORRUPTED explicitly for
crafted images
- Verify metadata accesses for file-backed mounts via rw_verify_area()
- Fix FS_IOC_GETFSLABEL to include the trailing NUL byte, consistent
with ext4 and xfs
- Properly handle 48-bit on-disk blocks/uniaddr for extra devices
- Fix an index underflow in the LZ4 in-place decompression that can
cause out-of-bounds accesses with crafted images
- Minor fixes and cleanups
* tag 'erofs-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: error out obviously illegal extents in advance
erofs: clean up encoded map flags
erofs: fix unsigned underflow in z_erofs_lz4_handle_overlap()
erofs: handle 48-bit blocks/uniaddr for extra devices
erofs: include the trailing NUL in FS_IOC_GETFSLABEL
erofs: ensure all folios are managed in erofs_try_to_free_all_cached_folios()
erofs: verify metadata accesses for file-backed mounts
erofs: harden h_shared_count in erofs_init_inode_xattrs()
Merge tag 'exfat-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat updates from Namjae Jeon:
- Implement FALLOC_FL_ALLOCATE_RANGE to add support for preallocating
clusters without zeroing, helping to reduce file fragmentation
- Add a unified block readahead helper for FAT chain conversion, bitmap
allocation, and directory entry lookups
- Optimize exfat_chain_cont_cluster() by caching buffer heads to
minimize mark_buffer_dirty() and mirroring overhead during
NO_FAT_CHAIN to FAT_CHAIN conversion
- Switch to truncate_inode_pages_final() in evict_inode() to prevent
BUG_ON caused by shadow entries during reclaim
- Fix a 32-bit truncation bug in directory entry calculations by
ensuring proper bitwise coercion
- Fix sb->s_maxbytes calculation to correctly reflect the maximum
possible volume size for a given cluster size, resolving xfstests
generic/213
- Introduced exfat_cluster_walk() helper to traverse FAT chains by a
specified step, handling both ALLOC_NO_FAT_CHAIN and ALLOC_FAT_CHAIN
modes
- Introduced exfat_chain_advance() helper to advance an exfat_chain
structure, updating both the current cluster and remaining size
- Remove dead assignments and fix Smatch warnings
* tag 'exfat-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: use exfat_chain_advance helper
exfat: introduce exfat_chain_advance helper
exfat: remove NULL cache pointer case in exfat_ent_get
exfat: use exfat_cluster_walk helper
exfat: introduce exfat_cluster_walk helper
exfat: fix incorrect directory checksum after rename to shorter name
exfat: fix s_maxbytes
exfat: fix passing zero to ERR_PTR() in exfat_mkdir()
exfat: fix error handling for FAT table operations
exfat: optimize exfat_chain_cont_cluster with cached buffer heads
exfat: drop redundant sec parameter from exfat_mirror_bh
exfat: use readahead helper in exfat_get_dentry
exfat: use readahead helper in exfat_allocate_bitmap
exfat: add block readahead in exfat_chain_cont_cluster
exfat: add fallocate FALLOC_FL_ALLOCATE_RANGE support
exfat: Fix bitwise operation having different size
exfat: Drop dead assignment of num_clusters
exfat: use truncate_inode_pages_final() at evict_inode()
Merge tag 'nilfs2-v7.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/nilfs2
Pull nilfs2 updates from Viacheslav Dubeyko:
"This contains fixes of syzbot reported issues in NILFS2 functionality:
- The DAT inode's btree node cache (i_assoc_inode) is initialized
lazily during btree operations.
However, nilfs_mdt_save_to_shadow_map() assumes i_assoc_inode is
already initialized when copying dirty pages to the shadow map
during GC. If NILFS_IOCTL_CLEAN_SEGMENTS is called immediately
after mount before any btree operation has occurred on the DAT
inode, i_assoc_inode is NULL leading to a general protection fault.
Fix this by calling nilfs_attach_btree_node_cache() on the DAT
inode in nilfs_dat_read() at mount time, ensuring i_assoc_inode is
always initialized before any GC operation can use it (Deepanshu
Kartikey)
- nilfs_ioctl_mark_blocks_dirty() uses bd_oblocknr to detect dead
blocks by comparing it with the current block number bd_blocknr. If
they differ, the block is considered dead and skipped.
A corrupted ioctl request with bd_oblocknr set to 0 causes the
comparison to incorrectly match when the lookup returns -ENOENT and
sets bd_blocknr to 0, bypassing the dead block check and calling
nilfs_bmap_mark() on a non- existent block. This causes
nilfs_btree_do_lookup() to return -ENOENT, triggering the
WARN_ON(ret == -ENOENT).
Fix this by rejecting ioctl requests with bd_oblocknr set to 0 at
the beginning of each iteration (Deepanshu Kartikey)"
* tag 'nilfs2-v7.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/nilfs2:
nilfs2: reject zero bd_oblocknr in nilfs_ioctl_mark_blocks_dirty()
nilfs2: fix NULL i_assoc_inode dereference in nilfs_mdt_save_to_shadow_map
Merge tag 'hfs-v7.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs
Pull hfsplus updates from Viacheslav Dubeyko:
"This contains several fixes of syzbot reported issues and HFS+ fixes
of xfstests failures.
- Fix a syzbot reported issue of a KMSAN uninit-value in
hfsplus_strcasecmp().
The root cause was that hfs_brec_read() doesn't validate that the
on-disk record size matches the expected size for the record type
being read. The fix introduced hfsplus_brec_read_cat() wrapper that
validates the record size based on the type field and returns -EIO
if size doesn't match (Deepanshu Kartikey)
- Fix a syzbot reported issue of processing corrupted HFS+ images
where the b-tree allocation bitmap indicates that the header node
(Node 0) is free. Node 0 must always be allocated. Violating this
invariant leads to allocator corruption, which cascades into kernel
panics or undefined behavior.
Prevent trusting a corrupted allocator state by adding a validation
check during hfs_btree_open(). If corruption is detected, print a
warning identifying the specific corrupted tree and force the
filesystem to mount read-only (SB_RDONLY).
This prevents kernel panics from corrupted images while enabling
data recovery (Shardul Bankar)
- Fix a potential deadlock in hfsplus_fill_super().
hfsplus_fill_super() calls hfs_find_init() to initialize a search
structure, which acquires tree->tree_lock. If the subsequent call
to hfsplus_cat_build_key() fails, the function jumps to the
out_put_root error label without releasing the lock.
Fix this by adding the missing hfs_find_exit(&fd) call before
jumping to the out_put_root error label. This ensures that
tree->tree_lock is properly released on the error path (Zilin Guan)
- Update a files ctime after rename in hfsplus_rename() (Yangtao Li)
The rest of the patches introduce the HFS+ fixes for the case of
generic/348, generic/728, generic/533, generic/523, and generic/642
test-cases of xfstests suite"
* tag 'hfs-v7.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/vdubeyko/hfs:
hfsplus: fix generic/642 failure
hfsplus: rework logic of map nodes creation in xattr b-tree
hfsplus: fix logic of alloc/free b-tree node
hfsplus: fix error processing issue in hfs_bmap_free()
hfsplus: fix potential race conditions in b-tree functionality
hfsplus: extract hidden directory search into a helper function
hfsplus: fix held lock freed on hfsplus_fill_super()
hfsplus: fix generic/523 test-case failure
hfsplus: validate b-tree node 0 bitmap at mount time
hfsplus: refactor b-tree map page access and add node-type validation
hfsplus: fix to update ctime after rename
hfsplus: fix generic/533 test-case failure
hfsplus: set ctime after setxattr and removexattr
hfsplus: fix uninit-value by validating catalog record size
hfsplus: fix potential Allocation File corruption after fsync
Merge tag 'for-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"User visible changes:
- move shutdown ioctl support out of experimental features, a forced
stop of filesystem operation until the next unmount; additionally
there's a super block operation to forcibly remove a device from
under the filesystem that could lead to a shutdown or not if the
redundancy allows that
- report filesystem shutdown using fserror mechanism
- tree-checker updates:
- verify free space info, extent and bitmap items
- verify remap-tree items and related data in block group items
Performance improvements:
- speed up clearing first extent in the tracked range (+10%
throughput on sample workload)
- reduce COW rewrites of extent buffers during the same transaction
- avoid taking big device lock to update device stats during
transaction commit
- fix unnecessary flush on close when truncating empty files
(observed in practice on a backup application)
- prevent direct reclaim during compressed readahead to avoid stalls
under memory pressure
Notable fixes:
- fix chunk allocation strategy on RAID1-like block groups with
disproportionate device sizes, this could lead to ENOSPC due to
skewed reservation estimates
- adjust metadata reservation overcommit ratio to be less aggressive
and also try to flush if possible, this avoids ENOSPC and potential
transaction aborts in some edge cases (that are otherwise hard to
reproduce)
- fix silent IO error in encoded writes and ordered extent split in
zoned mode, the error was not correctly propagated to the address
space and could lead to zeroed ranges
- don't mark inline files NOCOMPRESS unexpectedly, the intent was to
do that for single block writes of regular files
- fix deadlock between reflink and transaction commit when using
flushoncommit
- fix overly strict item check of a running dev-replace operation
Core:
- zoned mode space reservation fixes:
- cap delayed refs metadata reservation to avoid overcommit
- update logic to reclaim partially unusable zones
- add another state to flush and reclaim partially used zone
- limit number of zones reclaimed in one go to avoid blocking
other operations
- don't let log trees consume global reserve on overcommit and fall
back to transaction commit
- revalidate extent buffer when checking its up-to-date status
- add self tests for zoned mode block group specifics
- reduce atomic allocations in some qgroup paths
- avoid unnecessary root node COW during snapshotting
- start new transaction in block group relocation conditionally
- faster check of NOCOW files on currently snapshotted root
- change how compressed bio size is tracked from bio and reduce the
structure size
* tag 'for-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (116 commits)
btrfs: btrfs_log_dev_io_error() on all bio errors
btrfs: fix silent IO error loss in encoded writes and zoned split
btrfs: skip clearing EXTENT_DEFRAG for NOCOW ordered extents
btrfs: use BTRFS_FS_UPDATE_UUID_TREE_GEN flag for UUID tree rescan check
btrfs: remove duplicate journal_info reset on failure to commit transaction
btrfs: tag as unlikely if statements that check for fs in error state
btrfs: fix double free in create_space_info() error path
btrfs: fix double free in create_space_info_sub_group() error path
btrfs: do not reject a valid running dev-replace
btrfs: only invalidate btree inode pages after all ebs are released
btrfs: prevent direct reclaim during compressed readahead
btrfs: replace BUG_ON() with error return in cache_save_setup()
btrfs: zstd: don't cache sectorsize in a local variable
btrfs: zlib: don't cache sectorsize in a local variable
btrfs: zlib: drop redundant folio address variable
btrfs: lzo: inline read/write length helpers
btrfs: use common eb range validation in read_extent_buffer_to_user_nofault()
btrfs: read eb folio index right before loops
btrfs: rename local variable for offset in folio
btrfs: unify types for binary search variables
...
Merge tag 'for-7.1/io_uring-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring updates from Jens Axboe:
- Add a callback driven main loop for io_uring, and BPF struct_ops
on top to allow implementing custom event loop logic
- Decouple IOPOLL from being a ring-wide all-or-nothing setting,
allowing IOPOLL use cases to also issue certain white listed
non-polled opcodes
- Timeout improvements. Migrate internal timeout storage from
timespec64 to ktime_t for simpler arithmetic and avoid copying of
timespec data
- Zero-copy receive (zcrx) updates:
- Add a device-less mode (ZCRX_REG_NODEV) for testing and
experimentation where data flows through the copy fallback path
- Fix two-step unregistration regression, DMA length calculations,
xarray mark usage, and a potential 32-bit overflow in id
shifting
- Refactoring toward multi-area support: dedicated refill queue
struct, consolidated DMA syncing, netmem array refilling format,
and guard-based locking
- Zero-copy transmit (zctx) cleanup:
- Unify io_send_zc() and io_sendmsg_zc() into a single function
- Add vectorized registered buffer send for IORING_OP_SEND_ZC
- Add separate notification user_data via sqe->addr3 so
notification and completion CQEs can be distinguished without
extra reference counting
- Switch struct io_ring_ctx internal bitfields to explicit flag bits
with atomic-safe accessors, and annotate the known harmless races on
those flags
- Various optimizations caching ctx and other request fields in local
variables to avoid repeated loads, and cleanups for tctx setup, ring
fd registration, and read path early returns
* tag 'for-7.1/io_uring-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (58 commits)
io_uring: unify getting ctx from passed in file descriptor
io_uring/register: don't get a reference to the registered ring fd
io_uring/tctx: clean up __io_uring_add_tctx_node() error handling
io_uring/tctx: have io_uring_alloc_task_context() return tctx
io_uring/timeout: use 'ctx' consistently
io_uring/rw: clean up __io_read() obsolete comment and early returns
io_uring/zcrx: use correct mmap off constants
io_uring/zcrx: use dma_len for chunk size calculation
io_uring/zcrx: don't clear not allocated niovs
io_uring/zcrx: don't use mark0 for allocating xarray
io_uring: cast id to u64 before shifting in io_allocate_rbuf_ring()
io_uring/zcrx: reject REG_NODEV with large rx_buf_size
io_uring/cancel: validate opcode for IORING_ASYNC_CANCEL_OP
io_uring/rsrc: use io_cache_free() to free node
io_uring/zcrx: rename zcrx [un]register functions
io_uring/zcrx: check ctrl op payload struct sizes
io_uring/zcrx: cache fallback availability in zcrx ctx
io_uring/zcrx: warn on a repeated area append
io_uring/zcrx: consolidate dma syncing
io_uring/zcrx: netmem array as refiling format
...
Merge tag 'for-7.1/block-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- Add shared memory zero-copy I/O support for ublk, bypassing per-I/O
copies between kernel and userspace by matching registered buffer
PFNs at I/O time. Includes selftests.
- Refactor bio integrity to support filesystem initiated integrity
operations and arbitrary buffer alignment.
- Clean up bio allocation, splitting bio_alloc_bioset() into clear fast
and slow paths. Add bio_await() and bio_submit_or_kill() helpers,
unify synchronous bi_end_io callbacks.
- Fix zone write plug refcount handling and plug removal races. Add
support for serializing zone writes at QD=1 for rotational zoned
devices, yielding significant throughput improvements.
- Add SED-OPAL ioctls for Single User Mode management and a STACK_RESET
command.
- Add io_uring passthrough (uring_cmd) support to the BSG layer.
- Replace pp_buf in partition scanning with struct seq_buf.
- zloop improvements and cleanups.
- drbd genl cleanup, switching to pre_doit/post_doit.
- NVMe pull request via Keith:
- Fabrics authentication updates
- Enhanced block queue limits support
- Workqueue usage updates
- A new write zeroes device quirk
- Tagset cleanup fix for loop device
- MD pull requests via Yu Kuai:
- Fix raid5 soft lockup in retry_aligned_read()
- Fix raid10 deadlock with check operation and nowait requests
- Fix raid1 overlapping writes on writemostly disks
- Fix sysfs deadlock on array_state=clear
- Proactive RAID-5 parity building with llbitmap, with
write_zeroes_unmap optimization for initial sync
- Fix llbitmap barrier ordering, rdev skipping, and bitmap_ops
version mismatch fallback
- Fix bcache use-after-free and uninitialized closure
- Validate raid5 journal metadata payload size
- Various cleanups
- Various other fixes, improvements, and cleanups
* tag 'for-7.1/block-20260411' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (146 commits)
ublk: fix tautological comparison warning in ublk_ctrl_reg_buf
scsi: bsg: fix buffer overflow in scsi_bsg_uring_cmd()
block: refactor blkdev_zone_mgmt_ioctl
MAINTAINERS: update ublk driver maintainer email
Documentation: ublk: address review comments for SHMEM_ZC docs
ublk: allow buffer registration before device is started
ublk: replace xarray with IDA for shmem buffer index allocation
ublk: simplify PFN range loop in __ublk_ctrl_reg_buf
ublk: verify all pages in multi-page bvec fall within registered range
ublk: widen ublk_shmem_buf_reg.len to __u64 for 4GB buffer support
xfs: use bio_await in xfs_zone_gc_reset_sync
block: add a bio_submit_or_kill helper
block: factor out a bio_await helper
block: unify the synchronous bi_end_io callbacks
xfs: fix number of GC bvecs
selftests/ublk: add read-only buffer registration test
selftests/ublk: add filesystem fio verify test for shmem_zc
selftests/ublk: add hugetlbfs shmem_zc test for loop target
selftests/ublk: add shared memory zero-copy test
selftests/ublk: add UBLK_F_SHMEM_ZC support for loop target
...
Merge tag 'landlock-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux
Pull Landlock update from Mickaël Salaün:
"This adds a new Landlock access right for pathname UNIX domain sockets
thanks to a new LSM hook, and a few fixes"
* tag 'landlock-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (23 commits)
landlock: Document fallocate(2) as another truncation corner case
landlock: Document FS access right for pathname UNIX sockets
selftests/landlock: Simplify ruleset creation and enforcement in fs_test
selftests/landlock: Check that coredump sockets stay unrestricted
selftests/landlock: Audit test for LANDLOCK_ACCESS_FS_RESOLVE_UNIX
selftests/landlock: Test LANDLOCK_ACCESS_FS_RESOLVE_UNIX
selftests/landlock: Replace access_fs_16 with ACCESS_ALL in fs_test
samples/landlock: Add support for named UNIX domain socket restrictions
landlock: Clarify BUILD_BUG_ON check in scoping logic
landlock: Control pathname UNIX domain socket resolution by path
landlock: Use mem_is_zero() in is_layer_masks_allowed()
lsm: Add LSM hook security_unix_find
landlock: Fix kernel-doc warning for pointer-to-array parameters
landlock: Fix formatting in tsync.c
landlock: Improve kernel-doc "Return:" section consistency
landlock: Add missing kernel-doc "Return:" sections
selftests/landlock: Fix format warning for __u64 in net_test
selftests/landlock: Skip stale records in audit_match_record()
selftests/landlock: Drain stale audit records on init
selftests/landlock: Fix socket file descriptor leaks in audit helpers
...
Merge tag 'selinux-pr-20260410' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux update from Paul Moore:
- Annotate a known race condition to soothe KCSAN
* tag 'selinux-pr-20260410' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: annotate intentional data race in inode_doinit_with_dentry()
Merge tag 'lsm-pr-20260410' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull LSM updates from Paul Moore:
"We only have five patches in the LSM tree, but three of the five are
for an important bugfix relating to overlayfs and the mmap() and
mprotect() access controls for LSMs. Highlights below:
- Fix problems with the mmap() and mprotect() LSM hooks on overlayfs
As we are dealing with problems both in mmap() and mprotect() there
are essentially two components to this fix, spread across three
patches with all marked for stable.
The simplest portion of the fix is the creation of a new LSM hook,
security_mmap_backing_file(), that is used to enforce LSM mmap()
access controls on backing files in the stacked/overlayfs case. The
existing security_mmap_file() does not have visibility past the
user file. You can see from the associated SELinux hook callback
the code is fairly straightforward.
The mprotect() fix is a bit more complicated as there is no way in
the mprotect() code path to inspect both the user and backing
files, and bolting on a second file reference to vm_area_struct
wasn't really an option.
The solution taken here adds a LSM security blob and associated
hooks to the backing_file struct that LSMs can use to capture and
store relevant information from the user file. While the necessary
SELinux information is relatively small, a single u32, I expect
other LSMs to require more than that, and a dedicated backing_file
LSM blob provides a storage mechanism without negatively impacting
other filesystems.
I want to note that other LSMs beyond SELinux have been involved in
the discussion of the fixes presented here and they are working on
their own related changes using these new hooks, but due to other
issues those patches will be coming at a later date.
- Use kstrdup_const()/kfree_const() for securityfs symlink targets
- Resolve a handful of kernel-doc warnings in cred.h"
* tag 'lsm-pr-20260410' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
selinux: fix overlayfs mmap() and mprotect() access checks
lsm: add backing_file LSM hooks
fs: prepare for adding LSM blob to backing_file
securityfs: use kstrdup_const() to manage symlink targets
cred: fix kernel-doc warnings in cred.h
Merge tag 'audit-pr-20260410' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit updates from Paul Moore:
- Improved handling of unknown status requests from userspace
The current kernel code ignores unknown/unused request bits sent from
userspace and returns an error code based on the results of the
request(s) it does understand. The patch from Ricardo fixes this so
that unknown requests return an -EINVAL to userspace, making
compatibility a bit easier moving forward.
- A number of small style and formatting cleanups
* tag 'audit-pr-20260410' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: handle unknown status requests in audit_receive_msg()
audit: fix coding style issues
audit: remove redundant initialization of static variables to 0
audit: fix whitespace alignment in include/uapi/linux/audit.h
Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- coredump: add tracepoint for coredump events
- fs: hide file and bfile caches behind runtime const machinery
Fixes:
- fix architecture-specific compat_ftruncate64 implementations
- dcache: Limit the minimal number of bucket to two
- fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START
- fs/mbcache: cancel shrink work before destroying the cache
- dcache: permit dynamic_dname()s up to NAME_MAX
Cleanups:
- remove or unexport unused fs_context infrastructure
- trivial ->setattr cleanups
- selftests/filesystems: Assume that TIOCGPTPEER is defined
- writeback: fix kernel-doc function name mismatch for wb_put_many()
- autofs: replace manual symlink buffer allocation in autofs_dir_symlink
- init/initramfs.c: trivial fix: FSM -> Finite-state machine
- fs: remove stale and duplicate forward declarations
- readdir: Introduce dirent_size()
- fs: Replace user_access_{begin/end} by scoped user access
- kernel: acct: fix duplicate word in comment
- fs: write a better comment in step_into() concerning .mnt assignment
- fs: attr: fix comment formatting and spelling issues"
* tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits)
dcache: permit dynamic_dname()s up to NAME_MAX
fs: attr: fix comment formatting and spelling issues
fs: hide file and bfile caches behind runtime const machinery
fs: write a better comment in step_into() concerning .mnt assignment
proc: rename proc_notify_change to proc_setattr
proc: rename proc_setattr to proc_nochmod_setattr
affs: rename affs_notify_change to affs_setattr
adfs: rename adfs_notify_change to adfs_setattr
hfs: update comments on hfs_inode_setattr
kernel: acct: fix duplicate word in comment
fs: Replace user_access_{begin/end} by scoped user access
readdir: Introduce dirent_size()
coredump: add tracepoint for coredump events
fs: remove do_sys_truncate
fs: pass on FTRUNCATE_* flags to do_truncate
fs: fix archiecture-specific compat_ftruncate64
fs: remove stale and duplicate forward declarations
init/initramfs.c: trivial fix: FSM -> Finite-state machine
autofs: replace manual symlink buffer allocation in autofs_dir_symlink
fs/mbcache: cancel shrink work before destroying the cache
...
Merge tag 'vfs-7.1-rc1.pidfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull clone and pidfs updates from Christian Brauner:
"Add three new clone3() flags for pidfd-based process lifecycle
management.
CLONE_AUTOREAP:
CLONE_AUTOREAP makes a child process auto-reap on exit without ever
becoming a zombie. This is a per-process property in contrast to
the existing auto-reap mechanism via SA_NOCLDWAIT or SIG_IGN for
SIGCHLD which applies to all children of a given parent.
Currently the only way to automatically reap children is to set
SA_NOCLDWAIT or SIG_IGN on SIGCHLD. This is a parent-scoped
property affecting all children which makes it unsuitable for
libraries or applications that need selective auto-reaping of
specific children while still being able to wait() on others.
CLONE_AUTOREAP stores an autoreap flag in the child's
signal_struct. When the child exits do_notify_parent() checks this
flag and causes exit_notify() to transition the task directly to
EXIT_DEAD. Since the flag lives on the child it survives
reparenting: if the original parent exits and the child is
reparented to a subreaper or init the child still auto-reaps when
it eventually exits. This is cleaner than forcing the subreaper to
get SIGCHLD and then reaping it. If the parent doesn't care the
subreaper won't care. If there's a subreaper that would care it
would be easy enough to add a prctl() that either just turns back
on SIGCHLD and turns off auto-reaping or a prctl() that just
notifies the subreaper whenever a child is reparented to it.
CLONE_AUTOREAP can be combined with CLONE_PIDFD to allow the parent
to monitor the child's exit via poll() and retrieve exit status via
PIDFD_GET_INFO. Without CLONE_PIDFD it provides a fire-and-forget
pattern. No exit signal is delivered so exit_signal must be zero.
CLONE_THREAD and CLONE_PARENT are rejected: CLONE_THREAD because
autoreap is a process-level property, and CLONE_PARENT because an
autoreap child reparented via CLONE_PARENT could become an
invisible zombie under a parent that never calls wait().
The flag is not inherited by the autoreap process's own children.
Each child that should be autoreaped must be explicitly created
with CLONE_AUTOREAP.
CLONE_NNP:
CLONE_NNP sets no_new_privs on the child at clone time. Unlike
prctl(PR_SET_NO_NEW_PRIVS) which a process sets on itself,
CLONE_NNP allows the parent to impose no_new_privs on the child at
creation without affecting the parent's own privileges.
CLONE_THREAD is rejected because threads share credentials.
CLONE_NNP is useful on its own for any spawn-and-sandbox pattern
but was specifically introduced to enable unprivileged usage of
CLONE_PIDFD_AUTOKILL.
CLONE_PIDFD_AUTOKILL:
This flag ties a child's lifetime to the pidfd returned from
clone3(). When the last reference to the struct file created by
clone3() is closed the kernel sends SIGKILL to the child. A pidfd
obtained via pidfd_open() for the same process does not keep the
child alive and does not trigger autokill - only the specific
struct file from clone3() has this property. This is useful for
container runtimes, service managers, and sandboxed subprocess
execution - any scenario where the child must die if the parent
crashes or abandons the pidfd or just wants a throwaway helper
process.
CLONE_PIDFD_AUTOKILL requires both CLONE_PIDFD and CLONE_AUTOREAP.
It requires CLONE_PIDFD because the whole point is tying the
child's lifetime to the pidfd. It requires CLONE_AUTOREAP because a
killed child with no one to reap it would become a zombie - the
primary use case is the parent crashing or abandoning the pidfd so
no one is around to call waitpid(). CLONE_THREAD is rejected
because autokill targets a process not a thread.
If CLONE_NNP is specified together with CLONE_PIDFD_AUTOKILL an
unprivileged user may spawn a process that is autokilled. The child
cannot escalate privileges via setuid/setgid exec after being
spawned. If CLONE_PIDFD_AUTOKILL is specified without CLONE_NNP the
caller must have have CAP_SYS_ADMIN in its user namespace"
Merge tag 'vfs-7.1-rc1.bh.metadata' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs buffer_head updates from Christian Brauner:
"This cleans up the mess that has accumulated over the years in
metadata buffer_head tracking for inodes.
It moves the tracking into dedicated structure in filesystem-private
part of the inode (so that we don't use private_list, private_data,
and private_lock in struct address_space), and also moves couple other
users of private_data and private_list so these are removed from
struct address_space saving 3 longs in struct inode for 99% of inodes"
* tag 'vfs-7.1-rc1.bh.metadata' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (42 commits)
fs: Drop i_private_list from address_space
fs: Drop mapping_metadata_bhs from address space
ext4: Track metadata bhs in fs-private inode part
minix: Track metadata bhs in fs-private inode part
udf: Track metadata bhs in fs-private inode part
fat: Track metadata bhs in fs-private inode part
bfs: Track metadata bhs in fs-private inode part
affs: Track metadata bhs in fs-private inode part
ext2: Track metadata bhs in fs-private inode part
fs: Provide functions for handling mapping_metadata_bhs directly
fs: Switch inode_has_buffers() to take mapping_metadata_bhs
fs: Make bhs point to mapping_metadata_bhs
fs: Move metadata bhs tracking to a separate struct
fs: Fold fsync_buffers_list() into sync_mapping_buffers()
fs: Drop osync_buffers_list()
kvm: Use private inode list instead of i_private_list
fs: Remove i_private_data
aio: Stop using i_private_data and i_private_lock
hugetlbfs: Stop using i_private_data
fs: Stop using i_private_data for metadata bh tracking
...
Merge tag 'vfs-7.1-rc1.kino' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs i_ino updates from Christian Brauner:
"For historical reasons, the inode->i_ino field is an unsigned long,
which means that it's 32 bits on 32 bit architectures. This has caused
a number of filesystems to implement hacks to hash a 64-bit identifier
into a 32-bit field, and deprives us of a universal identifier field
for an inode.
This changes the inode->i_ino field from an unsigned long to a u64.
This shouldn't make any material difference on 64-bit hosts, but
32-bit hosts will see struct inode grow by at least 4 bytes. This
could have effects on slabcache sizes and field alignment.
The bulk of the changes are to format strings and tracepoints, since
the kernel itself doesn't care that much about the i_ino field. The
first patch changes some vfs function arguments, so check that one out
carefully.
With this change, we may be able to shrink some inode structures. For
instance, struct nfs_inode has a fileid field that holds the 64-bit
inode number. With this set of changes, that field could be
eliminated. I'd rather leave that sort of cleanups for later just to
keep this simple"
* tag 'vfs-7.1-rc1.kino' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
nilfs2: fix 64-bit division operations in nilfs_bmap_find_target_in_group()
EVM: add comment describing why ino field is still unsigned long
vfs: remove externs from fs.h on functions modified by i_ino widening
treewide: fix missed i_ino format specifier conversions
ext4: fix signed format specifier in ext4_load_inode trace event
treewide: change inode->i_ino from unsigned long to u64
nilfs2: widen trace event i_ino fields to u64
f2fs: widen trace event i_ino fields to u64
ext4: widen trace event i_ino fields to u64
zonefs: widen trace event i_ino fields to u64
hugetlbfs: widen trace event i_ino fields to u64
ext2: widen trace event i_ino fields to u64
cachefiles: widen trace event i_ino fields to u64
vfs: widen trace event i_ino fields to u64
net: change sock.sk_ino and sock_i_ino() to u64
audit: widen ino fields to u64
vfs: widen inode hash/lookup functions to u64
Merge tag 'vfs-7.1-rc1.integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs integrity updates from Christian Brauner:
"This adds support to generate and verify integrity information (aka
T10 PI) in the file system, instead of the automatic below the covers
support that is currently used.
The implementation is based on refactoring the existing block layer PI
code to be reusable for this use case, and then adding relatively
small wrappers for the file system use case. These are then used in
iomap to implement the semantics, and wired up in XFS with a small
amount of glue code.
Compared to the baseline this does not change performance for writes,
but increases read performance up to 15% for 4k I/O, with the benefit
decreasing with larger I/O sizes as even the baseline maxes out the
device quickly on my older enterprise SSD"
* tag 'vfs-7.1-rc1.integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
xfs: support T10 protection information
iomap: support T10 protection information
iomap: support ioends for buffered reads
iomap: add a bioset pointer to iomap_read_folio_ops
ntfs3: remove copy and pasted iomap code
iomap: allow file systems to hook into buffered read bio submission
iomap: only call into ->submit_read when there is a read_ctx
iomap: pass the iomap_iter to ->submit_read
iomap: refactor iomap_bio_read_folio_range
block: pass a maxlen argument to bio_iov_iter_bounce
block: add fs_bio_integrity helpers
block: make max_integrity_io_size public
block: prepare generation / verification helpers for fs usage
block: add a bdev_has_integrity_csum helper
block: factor out a bio_integrity_setup_default helper
block: factor out a bio_integrity_action helper
Merge tag 'vfs-7.1-rc1.directory' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs directory updates from Christian Brauner:
"Recently 'start_creating', 'start_removing', 'start_renaming' and
related interfaces were added which combine the locking and the
lookup.
At that time many callers were changed to use the new interfaces.
However there are still an assortment of places out side of the core
vfs where the directory is locked explictly, whether with inode_lock()
or lock_rename() or similar. These were missed in the first pass for
an assortment of uninteresting reasons.
This addresses the remaining places where explicit locking is used,
and changes them to use the new interfaces, or otherwise removes the
explicit locking.
The biggest changes are in overlayfs. The other changes are quite
simple, though maybe the cachefiles changes is the least simple of
those"
* tag 'vfs-7.1-rc1.directory' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
VFS: unexport lock_rename(), lock_rename_child(), unlock_rename()
ovl: remove ovl_lock_rename_workdir()
ovl: use is_subdir() for testing if one thing is a subdir of another
ovl: change ovl_create_real() to get a new lock when re-opening created file.
ovl: pass name buffer to ovl_start_creating_temp()
cachefiles: change cachefiles_bury_object to use start_renaming_dentry()
ovl: Simplify ovl_lookup_real_one()
VFS: make lookup_one_qstr_excl() static.
nfsd: switch purge_old() to use start_removing_noperm()
selinux: Use simple_start_creating() / simple_done_creating()
Apparmor: Use simple_start_creating() / simple_done_creating()
libfs: change simple_done_creating() to use end_creating()
VFS: move the start_dirop() kerndoc comment to before start_dirop()
fs/proc: Don't lock root inode when creating "self" and "thread-self"
VFS: note error returns in documentation for various lookup functions
Merge tag 'vfs-7.1-rc1.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs xattr updates from Christian Brauner:
"This reworks the simple_xattr infrastructure and adds support for
user.* extended attributes on sockets.
The simple_xattr subsystem currently uses an rbtree protected by a
reader-writer spinlock. This series replaces the rbtree with an
rhashtable giving O(1) average-case lookup with RCU-based lockless
reads. This sped up concurrent access patterns on tmpfs quite a bit
and it's an overall easy enough conversion to do and gets rid or
rwlock_t.
The conversion is done incrementally: a new rhashtable path is added
alongside the existing rbtree, consumers are migrated one at a time
(shmem, kernfs, pidfs), and then the rbtree code is removed. All three
consumers switch from embedded structs to pointer-based lazy
allocation so the rhashtable overhead is only paid for inodes that
actually use xattrs.
With this infrastructure in place the series adds support for user.*
xattrs on sockets. Path-based AF_UNIX sockets inherit xattr support
from the underlying filesystem (e.g. tmpfs) but sockets in sockfs -
that is everything created via socket() including abstract namespace
AF_UNIX sockets - had no xattr support at all.
The xattr_permission() checks are reworked to allow user.* xattrs on
S_IFSOCK inodes. Sockfs sockets get per-inode limits of 128 xattrs and
128KB total value size matching the limits already in use for kernfs.
The practical motivation comes from several directions. systemd and
GNOME are expanding their use of Varlink as an IPC mechanism.
For D-Bus there are tools like dbus-monitor that can observe IPC
traffic across the system but this only works because D-Bus has a
central broker.
For Varlink there is no broker and there is currently no way to
identify which sockets speak Varlink. With user.* xattrs on sockets a
service can label its socket with the IPC protocol it speaks (e.g.,
user.varlink=1) and an eBPF program can then selectively capture
traffic on those sockets. Enumerating bound sockets via netlink
combined with these xattr labels gives a way to discover all Varlink
IPC entrypoints for debugging and introspection.
Similarly, systemd-journald wants to use xattrs on the /dev/log socket
for protocol negotiation to indicate whether RFC 5424 structured
syslog is supported or whether only the legacy RFC 3164 format should
be used.
In containers these labels are particularly useful as high-privilege
or more complicated solutions for socket identification aren't
available.
The series comes with comprehensive selftests covering path-based
AF_UNIX sockets, sockfs socket operations, per-inode limit
enforcement, and xattr operations across multiple address families
(AF_INET, AF_INET6, AF_NETLINK, AF_PACKET)"
* tag 'vfs-7.1-rc1.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
selftests/xattr: test xattrs on various socket families
selftests/xattr: sockfs socket xattr tests
selftests/xattr: path-based AF_UNIX socket xattr tests
xattr: support extended attributes on sockets
xattr,net: support limited amount of extended attributes on sockfs sockets
xattr: move user limits for xattrs to generic infra
xattr: switch xattr_permission() to switch statement
xattr: add xattr_permission_error()
xattr: remove rbtree-based simple_xattr infrastructure
pidfs: adapt to rhashtable-based simple_xattrs
kernfs: adapt to rhashtable-based simple_xattrs with lazy allocation
shmem: adapt to rhashtable-based simple_xattrs with lazy allocation
xattr: add rhashtable-based simple_xattr infrastructure
xattr: add rcu_head and rhash_head to struct simple_xattr
Merge tag 'vfs-7.1-rc1.writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs writeback updates from Christian Brauner:
"This introduces writeback helper APIs and converts f2fs, gfs2 and nfs
to stop accessing writeback internals directly"
* tag 'vfs-7.1-rc1.writeback' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
nfs: stop using writeback internals for WB_WRITEBACK accounting
gfs2: stop using writeback internals for dirty_exceeded check
f2fs: stop using writeback internals for dirty_exceeded checks
writeback: prep helpers for dirty-limit and writeback accounting
Merge tag 'rust-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Bump the minimum Rust version to 1.85.0 (and 'bindgen' to 0.71.1).
As proposed in LPC 2025 and the Maintainers Summit [1], we are
going to follow Debian Stable's Rust versions as our minimum
versions.
Debian Trixie was released on 2025-08-09 with a Rust 1.85.0 and
'bindgen' 0.71.1 toolchain, which is a fair amount of time for e.g.
kernel developers to upgrade.
Other major distributions support a Rust version that is high
enough as well, including:
+ Arch Linux.
+ Fedora Linux.
+ Gentoo Linux.
+ Nix.
+ openSUSE Slowroll and openSUSE Tumbleweed.
+ Ubuntu 25.10 and 26.04 LTS. In addition, 24.04 LTS using
their versioned packages.
The merged patch series comes with the associated cleanups and
simplifications treewide that can be performed thanks to both
bumps, as well as documentation updates.
In addition, start using 'bindgen''s '--with-attribute-custom-enum'
feature to set the 'cfi_encoding' attribute for the 'lru_status'
enum used in Binder.
Link: https://lwn.net/Articles/1050174/
- Add experimental Kconfig option ('CONFIG_RUST_INLINE_HELPERS') that
inlines C helpers into Rust.
Essentially, it performs a step similar to LTO, but just for the
helpers, i.e. very local and fast.
It relies on 'llvm-link' and its '--internalize' flag, and requires
a compatible LLVM between Clang and 'rustc' (i.e. same major
version, 'CONFIG_RUSTC_CLANG_LLVM_COMPATIBLE'). It is only enabled
for two architectures for now.
The result is a measurable speedup in different workloads that
different users have tested. For instance, for the null block
driver, it amounts to a 2%.
- Support global per-version flags.
While we already have per-version flags in many places, we didn't
have a place to set global ones that depend on the compiler
version, i.e. in 'rust_common_flags', which sometimes is needed to
e.g. tweak the lints set per version.
Use that to allow the 'clippy::precedence' lint for Rust < 1.86.0,
since it had a change in behavior.
- Support overriding the crate name and apply it to Rust Binder,
which wanted the module to be called 'rust_binder'.
- Add the remaining '__rust_helper' annotations (started in the
previous cycle).
'kernel' crate:
- Introduce the 'const_assert!' macro: a more powerful version of
'static_assert!' that can refer to generics inside functions or
implementation bodies, e.g.:
In addition, reorganize our set of build-time assertion macros
('{build,const,static_assert}!') to live in the 'build_assert'
module.
Finally, improve the docs as well to clarify how these are
different from one another and how to pick the right one to use,
and their equivalence (if any) to the existing C ones for extra
clarity.
- 'sizes' module: add 'SizeConstants' trait.
This gives us typed 'SZ_*' constants (avoiding casts) for use in
device address spaces where the address width depends on the
hardware (e.g. 32-bit MMIO windows, 64-bit GPU framebuffers, etc.),
e.g.:
let gpu_heap = 14 * u64::SZ_1M;
let mmio_window = u32::SZ_16M;
- 'clk' module: implement 'Send' and 'Sync' for 'Clk' and thus
simplify the users in Tyr and PWM.
- 'ptr' module: add 'const_align_up'.
- 'str' module: improve the documentation of the 'c_str!' macro to
explain that one should only use it for non-literal cases (for the
other case we instead use C string literals, e.g. 'c"abc"').
- Disallow the use of 'CStr::{as_ptr,from_ptr}' and clean one such
use in the 'task' module.
- 'sync' module: finish the move of 'ARef' and 'AlwaysRefCounted'
outside of the 'types' module, i.e. update the last remaining
instances and finally remove the re-exports.
- 'error' module: clarify that 'from_err_ptr' can return 'Ok(NULL)',
including runtime-tested examples.
The intention is to hopefully prevent UB that assumes the result of
the function is not 'NULL' if successful. This originated from a
case of UB I noticed in 'regulator' that created a 'NonNull' on it.
Timekeeping:
- Expand the example section in the 'HrTimer' documentation.
- Mark the 'ClockSource' trait as unsafe to ensure valid values for
'ktime_get()'.
- Add 'Delta::from_nanos()'.
'pin-init' crate:
- Replace the 'Zeroable' impls for 'Option<NonZero*>' with impls of
'ZeroableOption' for 'NonZero*'.
- Improve feature gate handling for unstable features.
- Declutter the documentation of implementations of 'Zeroable' for
tuples.
- Replace uses of 'addr_of[_mut]!' with '&raw [mut]'.
rust-analyzer:
- Add type annotations to 'generate_rust_analyzer.py'.
- Add support for scripts written in Rust ('generate_rust_target.rs',
'rustdoc_test_builder.rs', 'rustdoc_test_gen.rs').
- Refactor 'generate_rust_analyzer.py' to explicitly identify host
and target crates, improve readability, and reduce duplication.
And some other fixes, cleanups and improvements"
* tag 'rust-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (79 commits)
rust: sizes: add SizeConstants trait for device address space constants
rust: kernel: update `file_with_nul` comment
rust: kbuild: allow `clippy::precedence` for Rust < 1.86.0
rust: kbuild: support global per-version flags
rust: declare cfi_encoding for lru_status
docs: rust: general-information: use real example
docs: rust: general-information: simplify Kconfig example
docs: rust: quick-start: remove GDB/Binutils mention
docs: rust: quick-start: remove Nix "unstable channel" note
docs: rust: quick-start: remove Gentoo "testing" note
docs: rust: quick-start: add Ubuntu 26.04 LTS and remove subsection title
docs: rust: quick-start: update minimum Ubuntu version
docs: rust: quick-start: update Ubuntu versioned packages
docs: rust: quick-start: openSUSE provides `rust-src` package nowadays
rust: kbuild: remove "dummy parameter" workaround for `bindgen` < 0.71.1
rust: kbuild: update `bindgen --rust-target` version and replace comment
rust: rust_is_available: remove warning for `bindgen` < 0.69.5 && libclang >= 19.1
rust: rust_is_available: remove warning for `bindgen` 0.66.[01]
rust: bump `bindgen` minimum supported version to 0.71.1 (Debian Trixie)
rust: block: update `const_refs_to_static` MSRV TODO comment
...
Merge tag 'rcu.2026.03.31a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Joel Fernandes:
"NOCB CPU management:
- Consolidate rcu_nocb_cpu_offload() and rcu_nocb_cpu_deoffload() to
reduce code duplication
- Extract nocb_bypass_needs_flush() helper to reduce duplication in
NOCB bypass path
rcutorture/torture infrastructure:
- Add NOCB01 config for RCU_LAZY torture testing
- Add NOCB02 config for NOCB poll mode testing
- Add TRIVIAL-PREEMPT config for textbook-style preemptible RCU
torture
- Test call_srcu() with preemption both disabled and enabled
- Remove kvm-check-branches.sh in favor of kvm-series.sh
- Make hangs more visible in torture.sh output
- Add informative message for tests without a recheck file
- Fix numeric test comparison in srcu_lockdep.sh
- Use torture_shutdown_init() in refscale and rcuscale instead of
open-coded shutdown functions
- Fix modulo-zero error in torture_hrtimeout_ns().
SRCU:
- Fix SRCU read flavor macro comments
- Fix s/they disables/they disable/ typo in srcu_read_unlock_fast()
RCU Tasks:
- Document that RCU Tasks Trace grace periods now imply RCU grace
periods
- Remove unnecessary smp_store_release() in cblist_init_generic()"
* tag 'rcu.2026.03.31a' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux:
rcutorture: Test call_srcu() with preemption disabled and not
rcu: Add BOOTPARAM_RCU_STALL_PANIC Kconfig option
torture: Avoid modulo-zero error in torture_hrtimeout_ns()
rcu/nocb: Extract nocb_bypass_needs_flush() to reduce duplication
rcu/nocb: Consolidate rcu_nocb_cpu_offload/deoffload functions
rcu-tasks: Remove unnecessary smp_store_release() in cblist_init_generic()
rcutorture: Add NOCB02 config for nocb poll mode testing
rcutorture: Add NOCB01 config for RCU_LAZY torture testing
rcu-tasks: Document that RCU Tasks Trace grace periods now imply RCU grace periods
srcu: Fix s/they disables/they disable/ typo in srcu_read_unlock_fast()
srcu: Fix SRCU read flavor macro comments
rcuscale: Ditch rcu_scale_shutdown in favor of torture_shutdown_init()
refscale: Ditch ref_scale_shutdown in favor of torture_shutdown_init()
rcutorture: Fix numeric "test" comparison in srcu_lockdep.sh
torture: Print informative message for test without recheck file
torture: Make hangs more visible in torture.sh output
kvm-check-branches.sh: Remove in favor of kvm-series.sh
rcutorture: Add a textbook-style trivial preemptible RCU
proc: make PROC_MEM_FORCE_PTRACE the Kconfig default
This kconfig option was introduced 18 months ago, with the historical
default of always allowing forcing memory permission overrides in order
to not change any existing behavior.
But it was documented as "for now", and this is a gentle nudge to people
that you probably _should_ be using PROC_MEM_FORCE_PTRACE. I've had
that in my local kernel config since the option was introduced.
Anybody who just does "make oldconfig" will pick up their old
configuration with no change, so this is still meant to not change any
existing system behavior, but at least gently prod people into trying
it.
I'd love to get rid of FOLL_FORCE entirely (see commit 8ee74a91ac30
"proc: try to remove use of FOLL_FORCE entirely" from roughly a decade
ago), but sadly that is likely not a realistic option (see commit f511c0b17b08 "Yes, people use FOLL_FORCE ;)" three weeks later).
But at least let's make it more obvious that you have the choice to
limit it and force people to at least be a bit more conscious about
their use of FOLL_FORCE, since judging from a recent discussion people
weren't even aware of this one.
This series cleans up some of the special user copy functions naming and
semantics. In particular, get rid of the (very traditional) double
underscore names and behavior: the whole "optimize away the range check"
model has been largely excised from the other user accessors because
it's so subtle and can be unsafe, but also because it's just not a
relevant optimization any more.
To do that, a couple of drivers that misused the "user" copies as kernel
copies in order to get non-temporal stores had to be fixed up, but that
kind of code should never have been allowed anyway.
The x86-only "nocache" version was also renamed to more accurately
reflect what it actually does.
This was all done because I looked at this code due to a report by Jann
Horn, and I just couldn't stand the inconsistent naming, the horrible
semantics, and the random misuse of these functions. This code should
probably be cleaned up further, but it's at least slightly closer to
normal semantics.
I had a more intrusive series that went even further in trying to
normalize the semantics, but that ended up hitting so many other
inconsistencies between different architectures in this area (eg
'size_t' vs 'unsigned long' vs 'int' as size arguments, and various
iovec check differences that Vasily Gorbik pointed out) that I ended up
with this more limited version that fixed the worst of the issues.
Reported-by: Jann Horn <jannh@google.com> Tested-by: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/all/CAHk-=wgg1QVWNWG-UCFo1hx0zqrPnB3qhPzUTrWNft+MtXQXig@mail.gmail.com/
* nocache-cleanup:
x86-64/arm64/powerpc: clean up and rename __copy_from_user_flushcache
x86: rename and clean up __copy_from_user_inatomic_nocache()
x86-64: rename misleadingly named '__copy_user_nocache()' function
smb: client: allow both 'lease' and 'nolease' mount options
Change the nolease mount option from fsparam_flag() to fsparam_flag_no()
so that both 'lease' and 'nolease' are accepted as valid mount options.
Previously, only 'nolease' was recognized. Passing 'lease' would fail
with an unknown parameter error (or be silently ignored with 'sloppy').
With this change:
- 'nolease' disables lease requests (same behavior as before)
- 'lease' explicitly enables lease requests
This also renames the enum value from Opt_nolease to Opt_lease and uses
result.negated to set ctx->no_lease, which is the standard pattern used
by other flag_no options in the cifs mount option parser.
Signed-off-by: Rajasi Mandal <rajasimandal@microsoft.com> Reviewed-by: Meetakshi Setiya <msetiya@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Merge remote-tracking branches 'ras/edac-misc' and 'ras/edac-drivers' into edac-updates
* ras/edac-misc:
EDAC/mc: Use kzalloc_flex()
EDAC/ie31200: Make rpl_s_cfg static
EDAC/mpc85xx: Constify device sysfs attributes
EDAC/device: Allow addition of const sysfs attributes
EDAC/pci_sysfs: Constify instance sysfs attributes
EDAC/device: Constify info sysfs attributes
EDAC/device: Drop unnecessary and dangerous casts of attributes
EDAC/device: Drop unused macro to_edacdev_attr()
EDAC/altera: Drop unused field eccmgr_sysfs_attr
* ras/edac-drivers:
EDAC/i10nm: Fix spelling mistake "readd" -> "read"
EDAC/versalnet: Fix device_node leak in mc_probe()
EDAC/versalnet: Fix memory leak in remove and probe error paths
EDAC/amd64: Add support for family 19h, models 40h-4fh
EDAC/i10nm: Add driver decoder for Granite Rapids server
EDAC/sb: Use kzalloc_flex()
EDAC/i7core: Use kzalloc_flex()
EDAC/versalnet: Refactor memory controller initialization and cleanup
nohz_full was introduced in v3.10 in 2013, which means this
documentation is overdue for 13 years.
Fortunately Paul wrote a part of the needed documentation a while ago,
especially concerning nohz_full in Documentation/timers/no_hz.rst and
also about per-CPU kthreads in
Documentation/admin-guide/kernel-per-CPU-kthreads.rst
Introduce a new page that gives an overview of CPU isolation in general.
Acked-by: Waiman Long <longman@redhat.com> Reviewed-by: Valentin Schneider <vschneid@redhat.com> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260402094749.18879-1-frederic@kernel.org>
Merge tag 'wq-for-7.0-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Pull workqueue fix from Tejun Heo:
"This is a fix for a stall which triggers on ordered workqueues when
there are multiple inactive work items during workqueue property
changes through sysfs, which doesn't happen that frequently.
While really late, the fix is very low risk as it just repeats an
operation which is already being performed:
- Fix incomplete activation of multiple inactive works when
unplugging a pool_workqueue, where the pending_pwqs list
wasn't being updated for subsequent works"
* tag 'wq-for-7.0-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
workqueue: Add pool_workqueue to pending_pwqs list when unplugging multiple inactive works
Merge tag 'timers-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Two fixes for the time/timers subsystem:
- Invert the inverted fastpath decision in check_tick_dependency(),
which prevents NOHZ full to stop the tick. That's a regression
introduced in the 7.0 merge window.
- Prevent a unpriviledged DoS in the clockevents code, where user
space can starve the timer interrupt by arming a timerfd or posix
interval timer in a tight loop with an absolute expiry time in the
past. The fix turned out to be incomplete and was was amended
yesterday to make it work on some 20 years old AMD machines as
well. All issues with it have been confirmed to be resolved by
various reporters"
* tag 'timers-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clockevents: Prevent timer interrupt starvation
tick/nohz: Fix inverted return value in check_tick_dependency() fast path
Merge tag 'perf-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Four Intel uncore PMU driver fixes by Zide Chen"
* tag 'perf-urgent-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Remove extra double quote mark
perf/x86/intel/uncore: Fix die ID init and look up bugs
perf/x86/intel/uncore: Skip discovery table for offline dies
perf/x86/intel/uncore: Fix iounmap() leak on global_init failure
X.509: Fix out-of-bounds access when parsing extensions
Leo reports an out-of-bounds access when parsing a certificate with
empty Basic Constraints or Key Usage extension because the first byte of
the extension is read before checking its length. Fix it.
The bug can be triggered by an unprivileged user by submitting a
specially crafted certificate to the kernel through the keyrings(7) API.
Leo has demonstrated this with a proof-of-concept program responsibly
disclosed off-list.
Fixes: 30eae2b037af ("KEYS: X.509: Parse Basic Constraints for CA") Fixes: 567671281a75 ("KEYS: X.509: Parse Key Usage") Reported-by: Leo Lin <leo@depthfirst.com> # off-list Signed-off-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Ignat Korchagin <ignat@linux.win> Cc: stable@vger.kernel.org # v6.4+ Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Merge tag 'spi-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of changes here, one update to MAINTAINERS for the AMD
controller and a chnage from Pei Xiao which in spite of the changelog
is actually a fix - previously the zynq-qspi driver leaked a clock
enable for every flash operation it did which isn't good, these extra
enables were removed when doing the enable cleanup which are probably
a good idea anyway"
* tag 'spi-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
MAINTAINERS: Update AMD SPI driver maintainers
spi: zynq-qspi: Simplify clock handling with devm_clk_get_enabled()
Merge tag 'regulator-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"One last fix for v7.0, the BD72720 incorrectly described which DCDC is
tied to the LDO for its LDON-HEAD mode which automates using the DCDC
to more efficiently drop a supply for delivery via the LDO"
* tag 'regulator-fix-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: bd71828-regulator.c: Fix LDON-HEAD mode
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"s390:
- vsie: Fix races with partial gmap invalidations
x86:
- Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: s390: vsie: Fix races with partial gmap invalidations
KVM: x86: Use __DECLARE_FLEX_ARRAY() for UAPI structures with VLAs
Merge tag 'usb-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fix from Greg KH:
"Here is a single USB fix for a reported regression in a recent USB
typec patch for 7.0-final. Sorry for the late submission, but it does
fix a problem that people have been seeing with 7.0-rc7 and the stable
kernels (due to a backported fix from there.)
This has been in linux-next this week with no reported issues, and the
reporter (Takashi), has said it resolves the problem they were seeing"
* tag 'usb-7.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: skip connector validation before init
Merge tag 'input-for-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"Two fixes for force feedback handling in uinput driver:
- fix circular locking dependency in uinput
- fix potential corruption of uinput event queue"
* tag 'input-for-v7.0-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: uinput - take event lock when submitting FF request "event"
Input: uinput - fix circular locking dependency with ff-core
I stumbled upon "isolcpus=managed_irq" which is the last piece which
can only be handled by isolcpus= and has no runtime knob. I knew roughly
what managed interrupts should do but I lacked some details how it is
used and what the managed_irq sub parameter means in practise.
This documents what we have as of today and how it works. I added some
examples how the parameter affects the configuration. Did I miss
something?
Given that the spreading as computed group_cpus_evenly() does not take
the mask of isolated CPUs into account I'm not sure how relevant the
managed_irq argument is. The virtio_scsi driver has no way to limit the
interrupts and I don't see this for the nvme. Even if the number of
queues can be reduced to two (as in the example) it is still spread
evenly in the system instead and the isolated CPUs are not taken into
account.
To make this worse, you can even argue further whether or not the
application on the isolated CPU wants to receive the interrupt directly
or would prefer not to.
Given all this, I am not sure if it makes sense to add 'io_queue' to the
mix or if it could be incorporated into 'managed_irq'.
One more point: Given that isolcpus= is marked deprecated as of commit b0d40d2b22fe4 ("sched/isolation: Document isolcpus= boot parameter flags, mark it deprecated")
and the 'managed_irq' is evaluated at device's probe time it would
require additional callbacks to re-evaluate the situation. Probably for
'io_queue', too. Does is make sense or should we simply drop the
"deprecation" notice and allowing using it long term?
Dynamic partitions work with cpusets, there this (managed_irq)
limitation but is it really? And if static partition is the use case why
bother.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Ming Lei <tom.leiming@gmail.com> Reviewed-by: Aaron Tomlin <atomlin@atomlin.com> Acked-by: Thomas Gleixner <tglx@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260401110232.ET5RxZfl@linutronix.de>
pstore/ftrace: Factor KASLR offset in the core kernel instruction addresses
The pstore ftrace frontend works by purely collecting the
instruction address, saving it on the persistent area through
the backend and when the log is read, on next boot for example,
the address is then resolved by using the regular printk symbol
lookup (%pS for example).
Problem: if we are running a relocatable kernel with KASLR enabled,
this is a recipe for failure in the symbol resolution on next boots,
since the addresses are offset'ed by the KASLR address. So, naturally
the way to go is factor the KASLR address out of instruction address
collection, and adding the fresh offset when resolving the symbol
on future boots.
Problem #2: modules also have varying addresses that float based
on module base address and potentially the module ordering in
memory, meaning factoring KASLR offset for them is useless.
So, let's hereby only take KASLR offset into account for core
kernel addresses, leaving module ones as is.
And we have yet a 3rd complexity: not necessarily the check range
for core kernel addresses holds true on future boots, since the
module base address will vary. With that, the choice was to mark
the addresses as being core vs module based on its MSB. And with
that...
...we have the 4th challenge here: for some "simple" architectures,
the CPU number is saved bit-encoded on the instruction pointer, to
allow bigger timestamps - this is set through the PSTORE_CPU_IN_IP
define for such architectures. Hence, the approach here is to skip
such architectures (at least in a first moment).
Finished? No. On top of all previous complexities, we have one
extra pain point: kaslr_offset() is inlined and fully "resolved"
at boot-time, after kernel decompression, through ELF relocation
mechanism. Once the offset is known, it's patched to the kernel
text area, wherever it is used. The mechanism, and its users, are
only built-in - incompatible with module usage. Though there are
possibly some hacks (as computing the offset using some kallsym
lookup), the choice here is to restrict this optimization to the
(hopefully common) case of CONFIG_PSTORE=y.
TL;DR: let's factor KASLR offsets on pstore/ftrace for core kernel
addresses, only when PSTORE is built-in and leaving module addresses
out, as well as architectures that define PSTORE_CPU_IN_IP.
Paulo Alcantara [Fri, 10 Apr 2026 23:20:55 +0000 (20:20 -0300)]
smb: client: get rid of d_drop()+d_add()
Replace d_drop()+d_add() in cifs_tmpfile() and cifs_create() with
d_instantiate(), and in cifs_atomic_open() with d_splice_alias() if
in-lookup, otherwise d_instantiate().
Reported-by: Al Viro <viro@zeniv.linux.org.uk> Closes: https://lore.kernel.org/r/20260408065719.GF3836593@ZenIV Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> Cc: David Howells <dhowells@redhat.com> Cc: NeilBrown <neilb@ownmail.net> Cc: linux-fsdevel@vger.kernel.org Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com>
Merge tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Paul Walmsley:
"Before v7.0 is released, fix a few issues with the CFI patchset,
merged earlier in v7.0-rc, that primarily affect interfaces to
non-kernel code:
- Improve the prctl() interface for per-task indirect branch landing
pad control to expand abbreviations and to resemble the speculation
control prctl() interface
- Expand the "LP" and "SS" abbreviations in the ptrace uapi header
file to "branch landing pad" and "shadow stack", to improve
readability
- Fix a typo in a CFI-related macro name in the ptrace uapi header
file
- Ensure that the indirect branch tracking state and shadow stack
state are unlocked immediately after an exec() on the new task so
that libc subsequently can control it
- While working in this area, clean up the kernel-internal,
cross-architecture prctl() function names by expanding the
abbreviations mentioned above"
* tag 'riscv-for-linus-v7.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
prctl: cfi: change the branch landing pad prctl()s to be more descriptive
riscv: ptrace: cfi: expand "SS" references to "shadow stack" in uapi headers
prctl: rename branch landing pad implementation functions to be more explicit
riscv: ptrace: expand "LP" references to "branch landing pads" in uapi headers
riscv: cfi: clear CFI lock status in start_thread()
riscv: ptrace: cfi: fix "PRACE" typo in uapi header
projects / thirdparty / kernel / linux.git / log
